56531016 has 24 divisors (see below), whose sum is σ = 153105030. Its totient is φ = 18843648.

The previous prime is 56531009. The next prime is 56531017. The reversal of 56531016 is 61013565.

It is a happy number.

56531016 is a `hidden beast` number, since 5 + 653 + 1 + 0 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43956900 + 12574116 = 6630^2 + 3546^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (56531017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 392505 + ... + 392648.

Almost surely, 2^56531016 is an apocalyptic number.

It is an amenable number.

56531016 is an abundant number, since it is smaller than the sum of its proper divisors (96574014).

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

56531016 is a wasteful number, since it uses less digits than its factorization.

56531016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785165 (or 785158 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 56531016 is about 7518.7110597495. The cubic root of 56531016 is about 383.7917164735.

The spelling of 56531016 in words is "fifty-six million, five hundred thirty-one thousand, sixteen".