56761520 has 20 divisors (see below), whose sum is σ = 131970720. Its totient is φ = 22704576.

The previous prime is 56761513. The next prime is 56761553. The reversal of 56761520 is 2516765.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354680 + ... + 354839.

It is an arithmetic number, because the mean of its divisors is an integer number (6598536).

Almost surely, 2^56761520 is an apocalyptic number.

It is an amenable number.

56761520 is an abundant number, since it is smaller than the sum of its proper divisors (75209200).

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

56761520 is a wasteful number, since it uses less digits than its factorization.

56761520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709532 (or 709526 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 56761520 is about 7534.0241571155. The cubic root of 56761520 is about 384.3126432434.

The spelling of 56761520 in words is "fifty-six million, seven hundred sixty-one thousand, five hundred twenty".