57155252 has 24 divisors (see below), whose sum is σ = 124703040. Its totient is φ = 22268160.

The previous prime is 57155251. The next prime is 57155279. The reversal of 57155252 is 25255175.

57155252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57155251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92477 + ... + 93092.

It is an arithmetic number, because the mean of its divisors is an integer number (5195960).

Almost surely, 2^57155252 is an apocalyptic number.

It is an amenable number.

57155252 is an abundant number, since it is smaller than the sum of its proper divisors (67547788).

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

57155252 is a wasteful number, since it uses less digits than its factorization.

57155252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185591 (or 185589 counting only the distinct ones).

The product of its digits is 17500, while the sum is 32.

The square root of 57155252 is about 7560.1092584697. The cubic root of 57155252 is about 385.1992042705.

The spelling of 57155252 in words is "fifty-seven million, one hundred fifty-five thousand, two hundred fifty-two".