57991373 has 16 divisors (see below), whose sum is σ = 65028096. Its totient is φ = 51264240.

The previous prime is 57991357. The next prime is 57991393. The reversal of 57991373 is 37319975.

It is a cyclic number.

It is not a de Polignac number, because 57991373 - 2⁴ = 57991357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57991333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115040 + ... + 115542.

It is an arithmetic number, because the mean of its divisors is an integer number (4064256).

Almost surely, 2^57991373 is an apocalyptic number.

It is an amenable number.

57991373 is a deficient number, since it is larger than the sum of its proper divisors (7036723).

57991373 is a wasteful number, since it uses less digits than its factorization.

57991373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784.

The product of its digits is 178605, while the sum is 44.

The square root of 57991373 is about 7615.2066945028. The cubic root of 57991373 is about 387.0684711268.

The spelling of 57991373 in words is "fifty-seven million, nine hundred ninety-one thousand, three hundred seventy-three".