56564631 has 12 divisors (see below), whose sum is σ = 81881280. Its totient is φ = 37628160.

The previous prime is 56564623. The next prime is 56564639. The reversal of 56564631 is 13646565.

56564631 is a `hidden beast` number, since 5 + 6 + 5 + 646 + 3 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (56564623) and next prime (56564639).

It is not a de Polignac number, because 56564631 - 2³ = 56564623 is a prime.

It is a super-2 number, since 2×56564631² = 6399114960332322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56564639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2250 + ... + 10871.

It is an arithmetic number, because the mean of its divisors is an integer number (6823440).

Almost surely, 2^56564631 is an apocalyptic number.

56564631 is a deficient number, since it is larger than the sum of its proper divisors (25316649).

56564631 is a wasteful number, since it uses less digits than its factorization.

56564631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13606 (or 13603 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 56564631 is about 7520.9461505850. The cubic root of 56564631 is about 383.8677726704.

The spelling of 56564631 in words is "fifty-six million, five hundred sixty-four thousand, six hundred thirty-one".