154 (number)

154 (one hundred [and] fifty-four) is the natural number following 153 and preceding 155.

In mathematics
154 is a nonagonal number. Its factorization makes 154 a sphenic number.

There is no integer with exactly 154 coprimes below it, making 154 a noncototient, nor is there, in base 10, any integer that added up to its own digits yields 154, making 154 a self number

154 is the sum of the first six factorials, if one starts with $$0!$$ and assumes that $$0!=1$$.

With just 17 cuts, a pancake can be cut up into 154 pieces (Lazy caterer's sequence).

The distinct prime factors of 154 add up to 20, and so do the ones of 153, hence the two form a Ruth-Aaron pair. 154! + 1 is a factorial prime.

In music

 * 154 is an album by Wire, named for the number of live gigs Wire had performed at that time

In the military

 * USS Bauxite (IX-154) was a United States Navy Trefoil-class concrete barge during World War II
 * USS Candid (AM-154) was a United States Navy Admirable-class minesweeper during World War II
 * USS Ellis (DD-154) was a United States Navy Wickes-class destroyer during World War II
 * USS General LeRoy Eltinge (AP-154) was a United States Navy General G. O. Squier-class transport during World War II
 * USS Lowndes (APA-154) was a United States Navy Haskell-class attack transport during World War II
 * USS Sims (DE-154) was a United States Navy Buckley-class destroyer escort ship during World War II
 * Strike Fighter Squadron 154 (VFA-154) is a United States Navy strike fighter squadron stationed at Naval Air Station Lemoore
 * Convoy ON-154 was a convoy of ships in December 1942 during World War II

In sports

 * Major League Baseball teams played 154 games per season prior to expansion in 1961
 * Golfer Jack Nicklaus played in a record 154 consecutive major championships from the 1957 U.S. Open to the 1998 U.S. Open

In transportation

 * Seattle Bus Route 154
 * The Maserati Tipo 154 racecar, also known as 151/4, was produced in 1965

In other fields
154 is also:
 * The year AD 154 or 154 BC
 * 154 AH is a year in the Islamic calendar that corresponds to that corresponds to 770 – 771 AD
 * 154 Bertha is a dark outer Main belt asteroid
 * Ross 154 is a red dwarf star near the southern constellation Sagittarius
 * Psalm 154
 * Shakespeare’s 154 sonnets, the last being Sonnet 154
 * Elcapo No. 154, Saskatchewan is a rural municipality in Saskatchewan, Canada
 * The atomic number of an element temporarily called Unpentquadium
 * In the United Kingdom, 154 is the telephone number used to report Business Faults with telephone provider BT
 * At 154% of the maximum expected load the Boeing 777's wings fail.