57139695 has 16 divisors (see below), whose sum is σ = 101581920. Its totient is φ = 30474432.

The previous prime is 57139661. The next prime is 57139697. The reversal of 57139695 is 59693175.

It is not a de Polignac number, because 57139695 - 2⁹ = 57139183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 57139695.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57139697) 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, 211494 + ... + 211763.

It is an arithmetic number, because the mean of its divisors is an integer number (6348870).

Almost surely, 2^57139695 is an apocalyptic number.

57139695 is a deficient number, since it is larger than the sum of its proper divisors (44442225).

57139695 is a wasteful number, since it uses less digits than its factorization.

57139695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423271 (or 423265 counting only the distinct ones).

The product of its digits is 255150, while the sum is 45.

The square root of 57139695 is about 7559.0803012007. The cubic root of 57139695 is about 385.1642521731.

The spelling of 57139695 in words is "fifty-seven million, one hundred thirty-nine thousand, six hundred ninety-five".