56957985 has 96 divisors (see below), whose sum is σ = 120836352. Its totient is φ = 25194240.

The previous prime is 56957983. The next prime is 56957993. The reversal of 56957985 is 58975965.

It is a happy number.

56957985 is a `hidden beast` number, since 5 + 69 + 579 + 8 + 5 = 666.

It is not a de Polignac number, because 56957985 - 2¹ = 56957983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56957983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 314595 + ... + 314775.

It is an arithmetic number, because the mean of its divisors is an integer number (1258712).

Almost surely, 2^56957985 is an apocalyptic number.

It is an amenable number.

56957985 is an abundant number, since it is smaller than the sum of its proper divisors (63878367).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56957985 is a wasteful number, since it uses less digits than its factorization.

56957985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 233 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 54.

The square root of 56957985 is about 7547.0514109816. The cubic root of 56957985 is about 384.7555315370.

The spelling of 56957985 in words is "fifty-six million, nine hundred fifty-seven thousand, nine hundred eighty-five".