56521524 has 12 divisors (see below), whose sum is σ = 131883584. Its totient is φ = 18840504.

The previous prime is 56521501. The next prime is 56521529. The reversal of 56521524 is 42512565.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 56521491 and 56521500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56521529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2355052 + ... + 2355075.

Almost surely, 2^56521524 is an apocalyptic number.

It is an amenable number.

56521524 is an abundant number, since it is smaller than the sum of its proper divisors (75362060).

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

56521524 is a wasteful number, since it uses less digits than its factorization.

56521524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4710134 (or 4710132 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 56521524 is about 7518.0798080361. The cubic root of 56521524 is about 383.7702347269.

The spelling of 56521524 in words is "fifty-six million, five hundred twenty-one thousand, five hundred twenty-four".