57121057 has 8 divisors (see below), whose sum is σ = 65351232. Its totient is φ = 48908400.

The previous prime is 57121021. The next prime is 57121079. The reversal of 57121057 is 75012175.

57121057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57121057 - 2⁷ = 57120929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57421057) 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, 3582 + ... + 11272.

It is an arithmetic number, because the mean of its divisors is an integer number (8168904).

Almost surely, 2^57121057 is an apocalyptic number.

It is an amenable number.

57121057 is a deficient number, since it is larger than the sum of its proper divisors (8230175).

57121057 is a wasteful number, since it uses less digits than its factorization.

57121057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8759.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 57121057 is about 7557.8473787184. The cubic root of 57121057 is about 385.1223696021.

The spelling of 57121057 in words is "fifty-seven million, one hundred twenty-one thousand, fifty-seven".