56531655 has 32 divisors (see below), whose sum is σ = 102409920. Its totient is φ = 29577600.

The previous prime is 56531641. The next prime is 56531663. The reversal of 56531655 is 55613565.

56531655 is a `hidden beast` number, since 565 + 31 + 65 + 5 = 666.

It is not a de Polignac number, because 56531655 - 2⁵ = 56531623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3205 + ... + 11105.

It is an arithmetic number, because the mean of its divisors is an integer number (3200310).

Almost surely, 2^56531655 is an apocalyptic number.

56531655 is a deficient number, since it is larger than the sum of its proper divisors (45878265).

56531655 is a wasteful number, since it uses less digits than its factorization.

56531655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7968 (or 7962 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

The square root of 56531655 is about 7518.7535536151. The cubic root of 56531655 is about 383.7931625350.

The spelling of 56531655 in words is "fifty-six million, five hundred thirty-one thousand, six hundred fifty-five".