56521516 has 12 divisors (see below), whose sum is σ = 99099280. Its totient is φ = 28207440.

The previous prime is 56521501. The next prime is 56521529. The reversal of 56521516 is 61512565.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10896 + ... + 15223.

Almost surely, 2^56521516 is an apocalyptic number.

It is an amenable number.

56521516 is a deficient number, since it is larger than the sum of its proper divisors (42577764).

56521516 is a wasteful number, since it uses less digits than its factorization.

56521516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26664 (or 26662 counting only the distinct ones).

The product of its digits is 9000, while the sum is 31.

The square root of 56521516 is about 7518.0792759853. The cubic root of 56521516 is about 383.7702166207.

The spelling of 56521516 in words is "fifty-six million, five hundred twenty-one thousand, five hundred sixteen".