56988931 has 4 divisors (see below), whose sum is σ = 57791664. Its totient is φ = 56186200.

The previous prime is 56988907. The next prime is 56988937. The reversal of 56988931 is 13988965.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13988965 = 5 ⋅2797793.

It is a cyclic number.

It is not a de Polignac number, because 56988931 - 2⁹ = 56988419 is a prime.

It is a super-2 number, since 2×56988931² = 6495476513045522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56988937) 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, 401260 + ... + 401401.

It is an arithmetic number, because the mean of its divisors is an integer number (14447916).

Almost surely, 2^56988931 is an apocalyptic number.

56988931 is a deficient number, since it is larger than the sum of its proper divisors (802733).

56988931 is an equidigital number, since it uses as much as digits as its factorization.

56988931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802732.

The product of its digits is 466560, while the sum is 49.

The square root of 56988931 is about 7549.1013372454. The cubic root of 56988931 is about 384.8251997845.

The spelling of 56988931 in words is "fifty-six million, nine hundred eighty-eight thousand, nine hundred thirty-one".