57139 has 2 divisors, whose sum is σ = 57140. Its totient is φ = 57138.

The previous prime is 57131. The next prime is 57143. The reversal of 57139 is 93175.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57139 - 2³ = 57131 is a prime.

It is equal to p₅₇₉₄ and since 57139 and 5794 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (57131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28569 + 28570.

It is an arithmetic number, because the mean of its divisors is an integer number (28570).

2⁵⁷¹³⁹ is an apocalyptic number.

57139 is a deficient number, since it is larger than the sum of its proper divisors (1).

57139 is an equidigital number, since it uses as much as digits as its factorization.

57139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 945, while the sum is 25.

The square root of 57139 is about 239.0376539376. The cubic root of 57139 is about 38.5162690560.

It can be divided in two parts, 57 and 139, that added together give a square (196 = 14²).

The spelling of 57139 in words is "fifty-seven thousand, one hundred thirty-nine".