57021356 has 24 divisors (see below), whose sum is σ = 120046080. Its totient is φ = 23151312.

The previous prime is 57021313. The next prime is 57021379. The reversal of 57021356 is 65312075.

57021356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 53060 + ... + 54123.

It is an arithmetic number, because the mean of its divisors is an integer number (5001920).

Almost surely, 2^57021356 is an apocalyptic number.

It is an amenable number.

57021356 is an abundant number, since it is smaller than the sum of its proper divisors (63024724).

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

57021356 is a wasteful number, since it uses less digits than its factorization.

57021356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107213 (or 107211 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 57021356 is about 7551.2486384703. The cubic root of 57021356 is about 384.8981706293.

The spelling of 57021356 in words is "fifty-seven million, twenty-one thousand, three hundred fifty-six".