175 (number)

175 is the natural number following 174 and preceding 176. It is a decagonal number.

175 is the magic constant of the "n"×"n" normal magic square and n-Queens Problem for n = 7.

In base 10, it can be observed that $175\; =\; 1^1\; +\; 7^2\; +\; 5^3$. 135, 518 and 598 also have this property. Also, 175 is divisible by the product of its digits, 35, making it a Zuckerman number.

In other fields

175 also refers to

* 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.

* "Paragraph 175", a documentary on the topic, narrated by Rupert Everett.

* 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, New York on September 11, 2001.

* The type of frisbee used in Ultimate weighs 175 grams, and there is a song by Big D and the Kids Table by that name.

* A 175-year anniversary is a terquasquicentennial - see anniversary - as in, The Merchant's House Museum in New York City is celebrating the terquasquicentennial of its construction in 2007.

* Two of the best One Day Cricket innings have seen batsmen score 175 runs. Kapil Dev was the first one to do so, scoring 175 not out against Zimbabwe in the 1983 Cricket World Cup when India was 9/4 (when he came in to bat) and 17/5 to finally take the score to 266. The second one was by Herschelle Gibbs against Australia when South Africa chased 434 runs (the highest test score for about 3 hours) and ended up making 438/9 and set a new world record in possibly the greatest ODI of all time.

For the year 175 AD, see 175.