56516320 has 48 divisors (see below), whose sum is σ = 152597088. Its totient is φ = 19376640.

The previous prime is 56516311. The next prime is 56516321. The reversal of 56516320 is 2361565.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56516321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24111 + ... + 26350.

It is an arithmetic number, because the mean of its divisors is an integer number (3179106).

Almost surely, 2^56516320 is an apocalyptic number.

It is an amenable number.

56516320 is an abundant number, since it is smaller than the sum of its proper divisors (96080768).

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

56516320 is a wasteful number, since it uses less digits than its factorization.

56516320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50483 (or 50475 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 56516320 is about 7517.7337010565. The cubic root of 56516320 is about 383.7584563136.

Adding to 56516320 its reverse (2361565), we get a palindrome (58877885).

The spelling of 56516320 in words is "fifty-six million, five hundred sixteen thousand, three hundred twenty".