56589521 has 4 divisors (see below), whose sum is σ = 56731044. Its totient is φ = 56448000.

The previous prime is 56589503. The next prime is 56589523. The reversal of 56589521 is 12598565.

56589521 = T₃₁₈ + T₃₁₉ + ... + T₇₁₈.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30691600 + 25897921 = 5540^2 + 5089^2 .

It is a cyclic number.

It is not a de Polignac number, because 56589521 - 2¹⁴ = 56573137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56589523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70160 + ... + 70961.

It is an arithmetic number, because the mean of its divisors is an integer number (14182761).

Almost surely, 2^56589521 is an apocalyptic number.

It is an amenable number.

56589521 is a deficient number, since it is larger than the sum of its proper divisors (141523).

56589521 is a wasteful number, since it uses less digits than its factorization.

56589521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141522.

The product of its digits is 108000, while the sum is 41.

The square root of 56589521 is about 7522.6006806157. The cubic root of 56589521 is about 383.9240685549.

The spelling of 56589521 in words is "fifty-six million, five hundred eighty-nine thousand, five hundred twenty-one".