57397389 has 32 divisors (see below), whose sum is σ = 94786560. Its totient is φ = 30143232.

The previous prime is 57397381. The next prime is 57397411. The reversal of 57397389 is 98379375.

It is a happy number.

It is not a de Polignac number, because 57397389 - 2³ = 57397381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57397381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13482 + ... + 17220.

It is an arithmetic number, because the mean of its divisors is an integer number (2962080).

Almost surely, 2^57397389 is an apocalyptic number.

It is an amenable number.

57397389 is a deficient number, since it is larger than the sum of its proper divisors (37389171).

57397389 is a wasteful number, since it uses less digits than its factorization.

57397389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809.

The product of its digits is 1428840, while the sum is 51.

The square root of 57397389 is about 7576.1064538455. The cubic root of 57397389 is about 385.7424006353.

The spelling of 57397389 in words is "fifty-seven million, three hundred ninety-seven thousand, three hundred eighty-nine".