56985 has 16 divisors (see below), whose sum is σ = 95040. Its totient is φ = 29120.

The previous prime is 56983. The next prime is 56989. The reversal of 56985 is 58965.

It is not a de Polignac number, because 56985 - 2¹ = 56983 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (56983) 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, 370 + ... + 500.

It is an arithmetic number, because the mean of its divisors is an integer number (5940).

2⁵⁶⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

56985 is a deficient number, since it is larger than the sum of its proper divisors (38055).

56985 is a wasteful number, since it uses less digits than its factorization.

56985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168.

The product of its digits is 10800, while the sum is 33.

The square root of 56985 is about 238.7153116162. The cubic root of 56985 is about 38.4816351384.

The spelling of 56985 in words is "fifty-six thousand, nine hundred eighty-five".