56516568 has 64 divisors (see below), whose sum is σ = 151787520. Its totient is φ = 17472000.

The previous prime is 56516549. The next prime is 56516591. The reversal of 56516568 is 86561565.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27993 + ... + 29943.

It is an arithmetic number, because the mean of its divisors is an integer number (2371680).

Almost surely, 2^56516568 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 56516568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75893760).

56516568 is an abundant number, since it is smaller than the sum of its proper divisors (95270952).

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

56516568 is a wasteful number, since it uses less digits than its factorization.

56516568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048 (or 2044 counting only the distinct ones).

The product of its digits is 216000, while the sum is 42.

The square root of 56516568 is about 7517.7501953710. The cubic root of 56516568 is about 383.7590176380.

The spelling of 56516568 in words is "fifty-six million, five hundred sixteen thousand, five hundred sixty-eight".