175 (number)

From Wikipedia, the free encyclopedia
← 174 175 176 →
← 170 171 172 173 174 175 176 177 178 179 →
List of numbers — Integers
← 0 100 200 300 400 500 600 700 800 900 →
Cardinalone hundred seventy-five
Ordinal175th
(one hundred seventy-fifth)
Factorization52 × 7
Divisors1, 5, 7, 25, 35, 175
Greek numeralΡΟΕ´
Roman numeralCLXXV
Binary101011112
Ternary201113
Octal2578
Duodecimal12712
HexadecimalAF16

175 (one hundred [and] seventy-five) is the natural number following 174 and preceding 176.

In mathematics[]

175 is an odd number, a composite number, and a deficient number. It is a decagonal number,[1] a 19-gonal number,[2] and a centered 29-gonal number.

175 is an Ulam number, and a . It is the magic constant of the n×n normal magic square and n-Queens Problem for n = 7.

In base 10, raising the digits of 175 to powers of successive integers equals itself: 175 = 11 + 72+ 53. 135, 518, 598, and 1306 also have this property.

In astronomy[]

In geography[]

  • 175 Greenwich Street, Manhattan

In the military[]

  • U-175 was a German Type IXC U-boat during World War II
  • USCG coastal buoy tender is a 175-foot United States Coast Guard Keeper class of coastal buoy tender
  • USNS Sgt. Curtis F. Shoup (T-AG-175) was a United States Navy cargo ship following World War II
  • USS Craighead (AK-175) was a United States Navy Alamosa-class cargo ship following World War II
  • USS Emeline (SP-175) was a yacht during World War I
  • USS Karnes (APA-175) was a United States Navy Haskell-class attack transport during World War II
  • USS MacKenzie (DD-175) was a United States Navy Wickes-class destroyer during World War I
  • USS Oceanside (LSM-175) was a United States Navy LSM-1-class landing ship medium during World War II
  • USS Pennewill (DE-175) was a United States Navy Cannon-class destroyer escort during World War II
  • USS Starlight (AP-175) was a United States Navy Storm King-class auxiliary transport during World War II
  • USS Tarpon (SS-175) was a Porpoise-class diesel-electric submarine during World War II
  • The 175th Battalion, CEF was a unit in the Canadian Expeditionary Force during World War I
  • The 175th Fighter Squadron unit of the South Dakota Air National Guard

In movies[]

  • Paragraph 175, a 2000 documentary on the topic, narrated by Rupert Everett

In music[]

  • The Gibson ES-175 jazz guitar
  • 175R is a Japanese ska punk band
  • The song "175" by Big D and the Kids Table, off their How It Goes CD (2004)

In religion[]

The Bible says that Abraham lived to be 175 years old.[3]

In transportation[]

  • United Airlines Flight 175, a Boston-Los Angeles flight which crashed into the South Tower of the World Trade Center after being hijacked by terrorists in New York City on September 11, 2001
    • The 2006 documentary Flight 175: As the World Watched
  • Cessna 175 Skylark single-engine airplane
  • Embraer E-Jets E-175 jetliners
  • British Rail Class 175
  • The 175th Street—George Washington Bridge Bus Terminal subway station in Manhattan
  • 174th–175th Streets subway station in the Bronx
  • Peugeot Type 175 car produced from 1923–1924

In other fields[]

175 is also:

  • The year AD 175 or 175 BC
  • 175 AH is a year in the Islamic calendar that corresponds to 791 – 792 CE
  • The atomic number of an element temporarily called Unseptpentium
  • Paragraph 175, a provision of the German Criminal Code that made homosexual acts between males a crime, and in early revisions the provision also criminalized bestiality. Also a 2000 documentary, Paragraph 175

See also[]

References[]

  1. ^ "Sloane's A001107 : 10-gonal (or decagonal) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
  2. ^ "Sloane's A051871 : 19-gonal (or enneadecagonal) numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
  3. ^ Genesis 25:7–8

External links[]

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