454

454 is a natural number that follows 453 and precedes 455. It is even and composite, with a prime factorization of 2 × 227. In decimal notation it is a palindrome, reading the same forward and backward.

In various numeral systems it has simple representations: in binary it is 111000110, in hexadecimal it is 0x1C6, and in Roman numerals it is written as CDLIV.

As a semiprime, 454 is the product of two primes (2 and 227), which makes it composite but not highly factorable. Its digit sum is 13, so it is not divisible by 3, and it is not divisible by 5.

A notable usage of the number is in automotive engineering. The Chevrolet 454 refers to a big-block engine with a displacement of 454 cubic inches, about 7.4 liters. These engines gained fame in muscle cars and trucks for their torque and power, particularly during the 1970s and into later decades.

The number also appears in firearms nomenclature. The .454 Casull is a well-known powerful handgun cartridge developed in the mid-20th century, widely associated with high stopping power in hunting and defensive revolvers.

In measurements, 454 grams is very close to one pound (1 lb = 453.59237 g). Because of this proximity, 454 g is a common rounding used in packaging and everyday labeling when a precise pound weight is not required.