56432556 has 54 divisors (see below), whose sum is σ = 145962180. Its totient is φ = 18378576.

The previous prime is 56432543. The next prime is 56432561. The reversal of 56432556 is 65523465.

It is a happy number.

56432556 is a `hidden beast` number, since 5 + 643 + 2 + 5 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 56432556.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 346131 + ... + 346293.

Almost surely, 2^56432556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56432556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72981090).

56432556 is an abundant number, since it is smaller than the sum of its proper divisors (89529624).

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

56432556 is a wasteful number, since it uses less digits than its factorization.

56432556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 227 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 56432556 is about 7512.1605414155. The cubic root of 56432556 is about 383.5687704706.

Subtracting 56432556 from its reverse (65523465), we obtain a palindrome (9090909).

The spelling of 56432556 in words is "fifty-six million, four hundred thirty-two thousand, five hundred fifty-six".