56565959 has 8 divisors (see below), whose sum is σ = 57519840. Its totient is φ = 55620000.

The previous prime is 56565923. The next prime is 56565967. The reversal of 56565959 is 95956565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56565959 - 2²⁰ = 55517383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56561959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13397 + ... + 17105.

It is an arithmetic number, because the mean of its divisors is an integer number (7189980).

Almost surely, 2^56565959 is an apocalyptic number.

56565959 is a deficient number, since it is larger than the sum of its proper divisors (953881).

56565959 is a wasteful number, since it uses less digits than its factorization.

56565959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3961.

The product of its digits is 1822500, while the sum is 50.

The square root of 56565959 is about 7521.0344368311. The cubic root of 56565959 is about 383.8707767409.

The spelling of 56565959 in words is "fifty-six million, five hundred sixty-five thousand, nine hundred fifty-nine".