56985917 has 16 divisors (see below), whose sum is σ = 59780160. Its totient is φ = 54288000.

The previous prime is 56985869. The next prime is 56985923. The reversal of 56985917 is 71958965.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56985917 - 2²⁰ = 55937341 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 (56985937) 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, 434942 + ... + 435072.

It is an arithmetic number, because the mean of its divisors is an integer number (3736260).

Almost surely, 2^56985917 is an apocalyptic number.

It is an amenable number.

56985917 is a deficient number, since it is larger than the sum of its proper divisors (2794243).

56985917 is a wasteful number, since it uses less digits than its factorization.

56985917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364.

The product of its digits is 680400, while the sum is 50.

The square root of 56985917 is about 7548.9017081957. The cubic root of 56985917 is about 384.8184155220.

The spelling of 56985917 in words is "fifty-six million, nine hundred eighty-five thousand, nine hundred seventeen".