56331557590 has 64 divisors (see below), whose sum is σ = 127382035968. Its totient is φ = 17423827200.

The previous prime is 56331557543. The next prime is 56331557593. The reversal of 56331557590 is 9575513365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56331557593) 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, 178359 + ... + 380098.

It is an arithmetic number, because the mean of its divisors is an integer number (1990344312).

Almost surely, 2^56331557590 is an apocalyptic number.

56331557590 is an abundant number, since it is smaller than the sum of its proper divisors (71050478378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56331557590 is a wasteful number, since it uses less digits than its factorization.

56331557590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558613.

The product of its (nonzero) digits is 2126250, while the sum is 49.

The spelling of 56331557590 in words is "fifty-six billion, three hundred thirty-one million, five hundred fifty-seven thousand, five hundred ninety".