15957

15957 is a natural number that follows 15956 and precedes 15958. It is an odd composite number with prime factorization 3^4 × 197, giving a divisor set of 1, 3, 9, 27, 81, 197, 591, 1773, 5319, and 15957.

The sum of its digits is 27, so the number is divisible by 9; specifically, 15957 ÷ 9 = 1773 and 15957 ÷ 27 = 591. Its digital root is 9, confirming its divisibility by 9. As a consequence of its factorization, 15957 has 10 positive divisors in total.

In base representations, 15957 equals 11111001010101 in binary, 37125 in octal, and 3E55 in hexadecimal. In decimal terms, it lies between 126^2 (15876) and 127^2 (16129), so it is not a perfect square.