57149055 has 24 divisors (see below), whose sum is σ = 104273520. Its totient is φ = 28874880.

The previous prime is 57149051. The next prime is 57149063. The reversal of 57149055 is 55094175.

It is not a de Polignac number, because 57149055 - 2² = 57149051 is a prime.

It is a super-4 number, since 4×57149055⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57149051) 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, 32566 + ... + 34275.

It is an arithmetic number, because the mean of its divisors is an integer number (4344730).

Almost surely, 2^57149055 is an apocalyptic number.

57149055 is a deficient number, since it is larger than the sum of its proper divisors (47124465).

57149055 is a wasteful number, since it uses less digits than its factorization.

57149055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66871 (or 66868 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 57149055 is about 7559.6993987856. The cubic root of 57149055 is about 385.1852821568.

The spelling of 57149055 in words is "fifty-seven million, one hundred forty-nine thousand, fifty-five".