56531707 has 4 divisors (see below), whose sum is σ = 59507080. Its totient is φ = 53556336.

The previous prime is 56531687. The next prime is 56531737. The reversal of 56531707 is 70713565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56531707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56531737) 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, 1487658 + ... + 1487695.

It is an arithmetic number, because the mean of its divisors is an integer number (14876770).

Almost surely, 2^56531707 is an apocalyptic number.

56531707 is a deficient number, since it is larger than the sum of its proper divisors (2975373).

56531707 is a wasteful number, since it uses less digits than its factorization.

56531707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975372.

The product of its (nonzero) digits is 22050, while the sum is 34.

The square root of 56531707 is about 7518.7570116343. The cubic root of 56531707 is about 383.7932802109.

The spelling of 56531707 in words is "fifty-six million, five hundred thirty-one thousand, seven hundred seven".