57138424 has 16 divisors (see below), whose sum is σ = 122439600. Its totient is φ = 24487872.

The previous prime is 57138413. The next prime is 57138539. The reversal of 57138424 is 42483175.

It is a self number, because there is not a number n which added to its sum of digits gives 57138424.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510109 + ... + 510220.

It is an arithmetic number, because the mean of its divisors is an integer number (7652475).

Almost surely, 2^57138424 is an apocalyptic number.

It is an amenable number.

57138424 is an abundant number, since it is smaller than the sum of its proper divisors (65301176).

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

57138424 is a wasteful number, since it uses less digits than its factorization.

57138424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020342 (or 1020338 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 57138424 is about 7558.9962296591. The cubic root of 57138424 is about 385.1613963220.

The spelling of 57138424 in words is "fifty-seven million, one hundred thirty-eight thousand, four hundred twenty-four".