57371391 has 24 divisors (see below), whose sum is σ = 103319424. Its totient is φ = 29802960.

The previous prime is 57371383. The next prime is 57371399. The reversal of 57371391 is 19317375.

It is an interprime number because it is at equal distance from previous prime (57371383) and next prime (57371399).

It is not a de Polignac number, because 57371391 - 2³ = 57371383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57371399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40701 + ... + 42086.

It is an arithmetic number, because the mean of its divisors is an integer number (4304976).

Almost surely, 2^57371391 is an apocalyptic number.

57371391 is a deficient number, since it is larger than the sum of its proper divisors (45948033).

57371391 is a wasteful number, since it uses less digits than its factorization.

57371391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82811 (or 82808 counting only the distinct ones).

The product of its digits is 19845, while the sum is 36.

The square root of 57371391 is about 7574.3904705263. The cubic root of 57371391 is about 385.6841514965.

The spelling of 57371391 in words is "fifty-seven million, three hundred seventy-one thousand, three hundred ninety-one".