175 (number)

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

List of numbers — Integers << 170 171 172 173 174 175 176 177 178 179 >>
Cardinal	One hundred [and] seventy five
Ordinal	175th
Factorization
Roman numeral	CLXXV
Binary	10101111
Hexadecimal	AF

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 = 1¹ + 7² + 5³. 135, 518 and 598 also have this property. Also, 175 is divisible by the product of its digits, 35, making it a Zuckerman number.

[edit] 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.

For the year 175 AD, see 175.