57135239 has 8 divisors (see below), whose sum is σ = 65347968. Its totient is φ = 48935160.

The previous prime is 57135227. The next prime is 57135311. The reversal of 57135239 is 93253175.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 57135239 - 2¹² = 57131143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57135199 and 57135208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57132239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10424 + ... + 14930.

It is an arithmetic number, because the mean of its divisors is an integer number (8168496).

Almost surely, 2^57135239 is an apocalyptic number.

57135239 is a deficient number, since it is larger than the sum of its proper divisors (8212729).

57135239 is a wasteful number, since it uses less digits than its factorization.

57135239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6325.

The product of its digits is 28350, while the sum is 35.

The square root of 57135239 is about 7558.7855506027. The cubic root of 57135239 is about 385.1542396560.

The spelling of 57135239 in words is "fifty-seven million, one hundred thirty-five thousand, two hundred thirty-nine".