57399 has 12 divisors (see below), whose sum is σ = 82296. Its totient is φ = 35568.

The previous prime is 57397. The next prime is 57413. The reversal of 57399 is 99375.

57399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57399 - 2¹ = 57397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1057 + ... + 1109.

It is an arithmetic number, because the mean of its divisors is an integer number (6858).

2⁵⁷³⁹⁹ is an apocalyptic number.

57399 is a deficient number, since it is larger than the sum of its proper divisors (24897).

57399 is a wasteful number, since it uses less digits than its factorization.

57399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 75 counting only the distinct ones).

The product of its digits is 8505, while the sum is 33.

The square root of 57399 is about 239.5808840455. The cubic root of 57399 is about 38.5746009540.

Multiplying 57399 by its reverse (99375), we get a square (5704025625 = 75525²).

The spelling of 57399 in words is "fifty-seven thousand, three hundred ninety-nine".