2551

2551 is a natural number that lies between 2550 and 2552. It is odd and, in mathematics, is a prime number.

As a prime, its only positive divisors are 1 and 2551. Therefore it cannot be expressed as the product of two smaller integers. Since 2551 ≡ 3 (mod 4), it cannot be represented as a sum of two squares.

Numeral representations of 2551 include: in binary, 100111110111; in octal, 4767; in hexadecimal, 0x9F7. In Roman numerals, 2551 is written as MMDLI.

Uses of the number 2551 include its appearance as a label in catalogs, product codes, or fictional timelines. As a calendar year, AD 2551 would refer to a far-future date in the Gregorian system.