57149438 has 4 divisors (see below), whose sum is σ = 85724160. Its totient is φ = 28574718.

The previous prime is 57149431. The next prime is 57149453. The reversal of 57149438 is 83494175.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 57149395 and 57149404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57149431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14287358 + ... + 14287361.

It is an arithmetic number, because the mean of its divisors is an integer number (21431040).

Almost surely, 2^57149438 is an apocalyptic number.

57149438 is a deficient number, since it is larger than the sum of its proper divisors (28574722).

57149438 is a wasteful number, since it uses less digits than its factorization.

57149438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28574721.

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

The square root of 57149438 is about 7559.7247304383. The cubic root of 57149438 is about 385.1861426297.

The spelling of 57149438 in words is "fifty-seven million, one hundred forty-nine thousand, four hundred thirty-eight".