57138635 has 4 divisors (see below), whose sum is σ = 68566368. Its totient is φ = 45710904.

The previous prime is 57138607. The next prime is 57138659. The reversal of 57138635 is 53683175.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57138635 - 2¹⁴ = 57122251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5713859 + ... + 5713868.

It is an arithmetic number, because the mean of its divisors is an integer number (17141592).

Almost surely, 2^57138635 is an apocalyptic number.

57138635 is a deficient number, since it is larger than the sum of its proper divisors (11427733).

57138635 is a wasteful number, since it uses less digits than its factorization.

57138635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11427732.

The product of its digits is 75600, while the sum is 38.

The square root of 57138635 is about 7559.0101865257. The cubic root of 57138635 is about 385.1618704276.

The spelling of 57138635 in words is "fifty-seven million, one hundred thirty-eight thousand, six hundred thirty-five".