56956531 has 4 divisors (see below), whose sum is σ = 56980000. Its totient is φ = 56933064.

The previous prime is 56956513. The next prime is 56956567. The reversal of 56956531 is 13565965.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56956531 - 2⁹ = 56956019 is a prime.

It is a super-2 number, since 2×56956531² = 6488092847107922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56936531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7611 + ... + 13108.

It is an arithmetic number, because the mean of its divisors is an integer number (14245000).

Almost surely, 2^56956531 is an apocalyptic number.

56956531 is a deficient number, since it is larger than the sum of its proper divisors (23469).

56956531 is a wasteful number, since it uses less digits than its factorization.

56956531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23468.

The product of its digits is 121500, while the sum is 40.

The square root of 56956531 is about 7546.9550813557. The cubic root of 56956531 is about 384.7522575489.

The spelling of 56956531 in words is "fifty-six million, nine hundred fifty-six thousand, five hundred thirty-one".