2537

2537 is a positive integer that follows 2536 and precedes 2538. It is an odd composite number. The prime factorization of 2537 is 43 × 59, so 2537 is a semiprime (the product of two primes). Consequently, it has exactly four positive divisors: 1, 43, 59, and 2537. The sum of its digits is 17, so it is not divisible by 3 and it is congruent to 8 modulo 9.

In various numeral systems, 2537 has representations such as 0x9E9 in hexadecimal, 0b100111101001 in binary, and 04751 in octal. In Roman numerals it is written as MMDXXXVII.

In mathematics, semiprimes like 2537 are used as simple examples of composite numbers that illustrate factoring and divisor-counting concepts. They also appear in introductory discussions of cryptographic ideas, where larger semiprimes formed from big primes are of particular interest. As a specific integer, 2537 serves as a concrete case for exploring prime factorization, divisors, and base representations without requiring advanced theory.