57137994 has 48 divisors (see below), whose sum is σ = 130003200. Its totient is φ = 18601848.

The previous prime is 57137989. The next prime is 57137999. The reversal of 57137994 is 49973175.

57137994 is a `hidden beast` number, since 571 + 3 + 79 + 9 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (57137989) and next prime (57137999).

It is not an unprimeable number, because it can be changed into a prime (57137999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119047 + ... + 119525.

It is an arithmetic number, because the mean of its divisors is an integer number (2708400).

Almost surely, 2^57137994 is an apocalyptic number.

57137994 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 57137994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65001600).

57137994 is an abundant number, since it is smaller than the sum of its proper divisors (72865206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57137994 is a wasteful number, since it uses less digits than its factorization.

57137994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 531 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 57137994 is about 7558.9677866756. The cubic root of 57137994 is about 385.1604301314.

The spelling of 57137994 in words is "fifty-seven million, one hundred thirty-seven thousand, nine hundred ninety-four".