57985569 has 6 divisors (see below), whose sum is σ = 83756946. Its totient is φ = 38657040.

The previous prime is 57985567. The next prime is 57985583. The reversal of 57985569 is 96558975.

It is a happy number.

57985569 is a `hidden beast` number, since 5 + 79 + 8 + 5 + 569 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30107169 + 27878400 = 5487^2 + 5280^2 .

It is not a de Polignac number, because 57985569 - 2¹ = 57985567 is a prime.

It is a super-2 number, since 2×57985569² = 6724652424507522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57985567) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3221412 + ... + 3221429.

It is an arithmetic number, because the mean of its divisors is an integer number (13959491).

Almost surely, 2^57985569 is an apocalyptic number.

It is an amenable number.

57985569 is a deficient number, since it is larger than the sum of its proper divisors (25771377).

57985569 is a wasteful number, since it uses less digits than its factorization.

57985569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442847 (or 6442844 counting only the distinct ones).

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

The square root of 57985569 is about 7614.8256053570. The cubic root of 57985569 is about 387.0555575948.

The spelling of 57985569 in words is "fifty-seven million, nine hundred eighty-five thousand, five hundred sixty-nine".