57138494 has 16 divisors (see below), whose sum is σ = 98160000. Its totient is φ = 24435864.

The previous prime is 57138413. The next prime is 57138539. The reversal of 57138494 is 49483175.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2897 + ... + 11075.

It is an arithmetic number, because the mean of its divisors is an integer number (6135000).

Almost surely, 2^57138494 is an apocalyptic number.

57138494 is a deficient number, since it is larger than the sum of its proper divisors (41021506).

57138494 is a wasteful number, since it uses less digits than its factorization.

57138494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8687.

The product of its digits is 120960, while the sum is 41.

The square root of 57138494 is about 7559.0008599021. Note that the first 3 decimals coincide. The cubic root of 57138494 is about 385.1615536083.

The spelling of 57138494 in words is "fifty-seven million, one hundred thirty-eight thousand, four hundred ninety-four".