57133494 has 48 divisors (see below), whose sum is σ = 142159680. Its totient is φ = 16400880.

The previous prime is 57133493. The next prime is 57133501. The reversal of 57133494 is 49433175.

It is a super-2 number, since 2×57133494² = 6528472273296072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57133493) 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, 3832 + ... + 11355.

It is an arithmetic number, because the mean of its divisors is an integer number (2961660).

Almost surely, 2^57133494 is an apocalyptic number.

57133494 is an abundant number, since it is smaller than the sum of its proper divisors (85026186).

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

57133494 is a wasteful number, since it uses less digits than its factorization.

57133494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15225 (or 15222 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 57133494 is about 7558.6701211258. The cubic root of 57133494 is about 385.1503185441.

The spelling of 57133494 in words is "fifty-seven million, one hundred thirty-three thousand, four hundred ninety-four".