56912520 has 96 divisors (see below), whose sum is σ = 198633600. Its totient is φ = 13007232.

The previous prime is 56912509. The next prime is 56912561. The reversal of 56912520 is 2521965.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 23 ways as a sum of consecutive naturals, for example, 1041 + ... + 10719.

It is an arithmetic number, because the mean of its divisors is an integer number (2069100).

Almost surely, 2^56912520 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 56912520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99316800).

56912520 is an abundant number, since it is smaller than the sum of its proper divisors (141721080).

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

56912520 is a wasteful number, since it uses less digits than its factorization.

56912520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9707 (or 9696 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 56912520 is about 7544.0387061573. The cubic root of 56912520 is about 384.6531311057.

The spelling of 56912520 in words is "fifty-six million, nine hundred twelve thousand, five hundred twenty".