56517680 has 40 divisors (see below), whose sum is σ = 134616384. Its totient is φ = 22054400.

The previous prime is 56517679. The next prime is 56517683. The reversal of 56517680 is 8671565.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (56517683) 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, 5336 + ... + 11895.

Almost surely, 2^56517680 is an apocalyptic number.

It is an amenable number.

56517680 is an abundant number, since it is smaller than the sum of its proper divisors (78098704).

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

56517680 is a wasteful number, since it uses less digits than its factorization.

56517680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17285 (or 17279 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 56517680 is about 7517.8241533039. The cubic root of 56517680 is about 383.7615345237.

It can be divided in two parts, 5651 and 7680, that added together give a palindrome (13331).

The spelling of 56517680 in words is "fifty-six million, five hundred seventeen thousand, six hundred eighty".