56515056 has 120 divisors (see below), whose sum is σ = 164562384. Its totient is φ = 16604160.

The previous prime is 56515049. The next prime is 56515057. The reversal of 56515056 is 65051565.

56515056 = 1154² + 1155² + ... + 1194².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56515057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1202425 + ... + 1202471.

Almost surely, 2^56515056 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 56515056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82281192).

56515056 is an abundant number, since it is smaller than the sum of its proper divisors (108047328).

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

56515056 is a wasteful number, since it uses less digits than its factorization.

56515056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 56515056 is about 7517.6496326977. The cubic root of 56515056 is about 383.7555953447.

The spelling of 56515056 in words is "fifty-six million, five hundred fifteen thousand, fifty-six".