56511532 has 24 divisors (see below), whose sum is σ = 123298560. Its totient is φ = 22017360.

The previous prime is 56511509. The next prime is 56511551. The reversal of 56511532 is 23511565.

56511532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 56511532.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91432 + ... + 92047.

It is an arithmetic number, because the mean of its divisors is an integer number (5137440).

Almost surely, 2^56511532 is an apocalyptic number.

It is an amenable number.

56511532 is an abundant number, since it is smaller than the sum of its proper divisors (66787028).

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

56511532 is a wasteful number, since it uses less digits than its factorization.

56511532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183501 (or 183499 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 56511532 is about 7517.4152472775. The cubic root of 56511532 is about 383.7476188105.

The spelling of 56511532 in words is "fifty-six million, five hundred eleven thousand, five hundred thirty-two".