56659889 has 16 divisors (see below), whose sum is σ = 67241664. Its totient is φ = 47064000.

The previous prime is 56659873. The next prime is 56659891. The reversal of 56659889 is 98895665.

56659889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 56659889 - 2⁴ = 56659873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56659829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12482 + ... + 16404.

It is an arithmetic number, because the mean of its divisors is an integer number (4202604).

Almost surely, 2^56659889 is an apocalyptic number.

It is an amenable number.

56659889 is a deficient number, since it is larger than the sum of its proper divisors (10581775).

56659889 is a wasteful number, since it uses less digits than its factorization.

56659889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048.

The product of its digits is 4665600, while the sum is 56.

The square root of 56659889 is about 7527.2763334423. The cubic root of 56659889 is about 384.0831367484.

The spelling of 56659889 in words is "fifty-six million, six hundred fifty-nine thousand, eight hundred eighty-nine".