57135986 has 8 divisors (see below), whose sum is σ = 85870044. Its totient is φ = 28512640.

The previous prime is 57135971. The next prime is 57135989. The reversal of 57135986 is 68953175.

It can be written as a sum of positive squares in 2 ways, for example, as 56535361 + 600625 = 7519^2 + 775^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57135989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26375 + ... + 28458.

Almost surely, 2^57135986 is an apocalyptic number.

57135986 is a deficient number, since it is larger than the sum of its proper divisors (28734058).

57135986 is a wasteful number, since it uses less digits than its factorization.

57135986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55356.

The product of its digits is 226800, while the sum is 44.

The square root of 57135986 is about 7558.8349631408. The cubic root of 57135986 is about 385.1559181821.

The spelling of 57135986 in words is "fifty-seven million, one hundred thirty-five thousand, nine hundred eighty-six".