56489521 has 16 divisors (see below), whose sum is σ = 65536128. Its totient is φ = 48121600.

The previous prime is 56489501. The next prime is 56489539. The reversal of 56489521 is 12598465.

It is a cyclic number.

It is not a de Polignac number, because 56489521 - 2⁷ = 56489393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56489501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54276 + ... + 55306.

It is an arithmetic number, because the mean of its divisors is an integer number (4096008).

Almost surely, 2^56489521 is an apocalyptic number.

It is an amenable number.

56489521 is a deficient number, since it is larger than the sum of its proper divisors (9046607).

56489521 is a wasteful number, since it uses less digits than its factorization.

56489521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352.

The product of its digits is 86400, while the sum is 40.

The square root of 56489521 is about 7515.9511041518. The cubic root of 56489521 is about 383.6977896552.

The spelling of 56489521 in words is "fifty-six million, four hundred eighty-nine thousand, five hundred twenty-one".