57039 has 4 divisors (see below), whose sum is σ = 76056. Its totient is φ = 38024.

The previous prime is 57037. The next prime is 57041. The reversal of 57039 is 93075.

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

It is an interprime number because it is at equal distance from previous prime (57037) and next prime (57041).

It is a cyclic number.

It is not a de Polignac number, because 57039 - 2¹ = 57037 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9504 + ... + 9509.

It is an arithmetic number, because the mean of its divisors is an integer number (19014).

2⁵⁷⁰³⁹ is an apocalyptic number.

57039 is a deficient number, since it is larger than the sum of its proper divisors (19017).

57039 is a wasteful number, since it uses less digits than its factorization.

57039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19016.

The product of its (nonzero) digits is 945, while the sum is 24.

The square root of 57039 is about 238.8283902722. The cubic root of 57039 is about 38.4937865950.

The spelling of 57039 in words is "fifty-seven thousand, thirty-nine".