57539 has 4 divisors (see below), whose sum is σ = 58056. Its totient is φ = 57024.

The previous prime is 57529. The next prime is 57557. The reversal of 57539 is 93575.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 57539 - 2⁸ = 57283 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (57529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14 + ... + 339.

It is an arithmetic number, because the mean of its divisors is an integer number (14514).

2⁵⁷⁵³⁹ is an apocalyptic number.

57539 is a deficient number, since it is larger than the sum of its proper divisors (517).

57539 is a wasteful number, since it uses less digits than its factorization.

57539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its digits is 4725, while the sum is 29.

The square root of 57539 is about 239.8728830026. The cubic root of 57539 is about 38.6059375011.

The spelling of 57539 in words is "fifty-seven thousand, five hundred thirty-nine".