57118986 has 32 divisors (see below), whose sum is σ = 130032000. Its totient is φ = 18574560.

The previous prime is 57118981. The next prime is 57118991. The reversal of 57118986 is 68981175.

It is an interprime number because it is at equal distance from previous prime (57118981) and next prime (57118991).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57118981) 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, 10686 + ... + 15113.

It is an arithmetic number, because the mean of its divisors is an integer number (4063500).

Almost surely, 2^57118986 is an apocalyptic number.

57118986 is an abundant number, since it is smaller than the sum of its proper divisors (72913014).

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

57118986 is a wasteful number, since it uses less digits than its factorization.

57118986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25851 (or 25845 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 57118986 is about 7557.7103675650. The cubic root of 57118986 is about 385.1177151711.

The spelling of 57118986 in words is "fifty-seven million, one hundred eighteen thousand, nine hundred eighty-six".