56166831 has 32 divisors (see below), whose sum is σ = 100108800. Its totient is φ = 30404160.

The previous prime is 56166821. The next prime is 56166839. The reversal of 56166831 is 13866165.

It is a happy number.

56166831 is a `hidden beast` number, since 5 + 616 + 6 + 8 + 31 = 666.

It is not a de Polignac number, because 56166831 - 2¹¹ = 56164783 is a prime.

It is a super-2 number, since 2×56166831² = 6309425809165122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56166839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4230 + ... + 11411.

It is an arithmetic number, because the mean of its divisors is an integer number (3128400).

Almost surely, 2^56166831 is an apocalyptic number.

56166831 is a deficient number, since it is larger than the sum of its proper divisors (43941969).

56166831 is a wasteful number, since it uses less digits than its factorization.

56166831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15676 (or 15670 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 56166831 is about 7494.4533489775. The cubic root of 56166831 is about 382.9657839712.

The spelling of 56166831 in words is "fifty-six million, one hundred sixty-six thousand, eight hundred thirty-one".