56509356 has 12 divisors (see below), whose sum is σ = 131855192. Its totient is φ = 18836448.

The previous prime is 56509331. The next prime is 56509361. The reversal of 56509356 is 65390565.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2354545 + ... + 2354568.

Almost surely, 2^56509356 is an apocalyptic number.

It is an amenable number.

56509356 is an abundant number, since it is smaller than the sum of its proper divisors (75345836).

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

56509356 is a wasteful number, since it uses less digits than its factorization.

56509356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709120 (or 4709118 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 39.

The square root of 56509356 is about 7517.2705152868. The cubic root of 56509356 is about 383.7426932935.

It can be divided in two parts, 56509 and 356, that added together give a palindrome (56865).

The spelling of 56509356 in words is "fifty-six million, five hundred nine thousand, three hundred fifty-six".