2457

2457 is a natural number that comes after 2456 and before 2458. In decimal notation, it is written as 2457.

In mathematics, 2457 is an odd, composite number. Its prime factorization is 3^3 × 7 × 13, meaning 2457 = 27 × 91 = 9 × 273. This places 2457 among the integers with multiple small prime factors, and it is divisible by 3, 9, and 27.

Numeral representations and forms of 2457 include its hexadecimal, binary, and octal equivalents as well as its Roman numeral expression. In hexadecimal, 2457 equals 0x999. In binary, it is 100110011001, and in octal, it is 4631. The Roman numeral representation is MMCDLVII, corresponding to 2000 (MM) + 400 (CD) + 50 (L) + 7 (VII).

In calendar terms, 2457 CE would be a year in the 25th century of the Gregorian calendar. Beyond that, 2457 is typically encountered as a numerical identifier rather than a marker of specific historical events, and it may appear in cataloging, numbering schemes, or numerical sequences without particular significance tied to its value.

See also: the number 2457 in number theory and numeral systems.