56646931 has 4 divisors (see below), whose sum is σ = 61796664. Its totient is φ = 51497200.

The previous prime is 56646913. The next prime is 56646937. The reversal of 56646931 is 13964665.

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 56646931 - 2⁵ = 56646899 is a prime.

It is a super-2 number, since 2×56646931² = 6417749583437522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56646937) 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, 2574850 + ... + 2574871.

It is an arithmetic number, because the mean of its divisors is an integer number (15449166).

Almost surely, 2^56646931 is an apocalyptic number.

56646931 is a deficient number, since it is larger than the sum of its proper divisors (5149733).

56646931 is a wasteful number, since it uses less digits than its factorization.

56646931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149732.

The product of its digits is 116640, while the sum is 40.

The square root of 56646931 is about 7526.4155479219. The cubic root of 56646931 is about 384.0538548418.

The spelling of 56646931 in words is "fifty-six million, six hundred forty-six thousand, nine hundred thirty-one".