57056121 has 12 divisors (see below), whose sum is σ = 82525248. Its totient is φ = 37986264.

The previous prime is 57056117. The next prime is 57056161. The reversal of 57056121 is 12165075.

It is not a de Polignac number, because 57056121 - 2² = 57056117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57056101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3556 + ... + 11258.

It is an arithmetic number, because the mean of its divisors is an integer number (6877104).

Almost surely, 2^57056121 is an apocalyptic number.

It is an amenable number.

57056121 is a deficient number, since it is larger than the sum of its proper divisors (25469127).

57056121 is a wasteful number, since it uses less digits than its factorization.

57056121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8532 (or 8529 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 57056121 is about 7553.5502248943. The cubic root of 57056121 is about 384.9763768043.

The spelling of 57056121 in words is "fifty-seven million, fifty-six thousand, one hundred twenty-one".