57149444 has 24 divisors (see below), whose sum is σ = 115522848. Its totient is φ = 24448640.

The previous prime is 57149431. The next prime is 57149453. The reversal of 57149444 is 44494175.

It is a junction number, because it is equal to n+sod(n) for n = 57149398 and 57149407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37454 + ... + 38949.

It is an arithmetic number, because the mean of its divisors is an integer number (4813452).

Almost surely, 2^57149444 is an apocalyptic number.

It is an amenable number.

57149444 is an abundant number, since it is smaller than the sum of its proper divisors (58373404).

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

57149444 is a wasteful number, since it uses less digits than its factorization.

57149444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76435 (or 76433 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 57149444 is about 7559.7251272781. The cubic root of 57149444 is about 385.1861561097.

The spelling of 57149444 in words is "fifty-seven million, one hundred forty-nine thousand, four hundred forty-four".