57352139 has 16 divisors (see below), whose sum is σ = 64829184. Its totient is φ = 50371200.

The previous prime is 57352093. The next prime is 57352157. The reversal of 57352139 is 93125375.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57352139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57352099 and 57352108.

It is not an unprimeable number, because it can be changed into a prime (57352199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23417 + ... + 25749.

It is an arithmetic number, because the mean of its divisors is an integer number (4051824).

Almost surely, 2^57352139 is an apocalyptic number.

57352139 is a deficient number, since it is larger than the sum of its proper divisors (7477045).

57352139 is a wasteful number, since it uses less digits than its factorization.

57352139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438.

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

The square root of 57352139 is about 7573.1195025564. The cubic root of 57352139 is about 385.6410055901.

The spelling of 57352139 in words is "fifty-seven million, three hundred fifty-two thousand, one hundred thirty-nine".