56509032 has 64 divisors (see below), whose sum is σ = 147087360. Its totient is φ = 18072000.

The previous prime is 56508989. The next prime is 56509043. The reversal of 56509032 is 23090565.

It is an alternating number because its digits alternate between odd and even.

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, 112093 + ... + 112595.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2^56509032 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 56509032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73543680).

56509032 is an abundant number, since it is smaller than the sum of its proper divisors (90578328).

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

56509032 is a wasteful number, since it uses less digits than its factorization.

56509032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 56509032 is about 7517.2489648807. The cubic root of 56509032 is about 383.7419598877.

Adding to 56509032 its reverse (23090565), we get a palindrome (79599597).

The spelling of 56509032 in words is "fifty-six million, five hundred nine thousand, thirty-two".