56643132 has 48 divisors (see below), whose sum is σ = 162670592. Its totient is φ = 14938560.

The previous prime is 56643113. The next prime is 56643149. The reversal of 56643132 is 23134665.

It is a self number, because there is not a number n which added to its sum of digits gives 56643132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24844 + ... + 27027.

Almost surely, 2^56643132 is an apocalyptic number.

56643132 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

56643132 is an abundant number, since it is smaller than the sum of its proper divisors (106027460).

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

56643132 is a wasteful number, since it uses less digits than its factorization.

56643132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51898 (or 51896 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 56643132 is about 7526.1631659166. The cubic root of 56643132 is about 384.0452691856.

Adding to 56643132 its reverse (23134665), we get a palindrome (79777797).

The spelling of 56643132 in words is "fifty-six million, six hundred forty-three thousand, one hundred thirty-two".