57065121 has 8 divisors (see below), whose sum is σ = 84540960. Its totient is φ = 38043396.

The previous prime is 57065111. The next prime is 57065123. The reversal of 57065121 is 12156075.

57065121 is a `hidden beast` number, since 5 + 7 + 0 + 651 + 2 + 1 = 666.

It is not a de Polignac number, because 57065121 - 2⁷ = 57064993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2113523 = 57065121 / (5 + 7 + 0 + 6 + 5 + 1 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (57065123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056735 + ... + 1056788.

It is an arithmetic number, because the mean of its divisors is an integer number (10567620).

Almost surely, 2^57065121 is an apocalyptic number.

It is an amenable number.

57065121 is a deficient number, since it is larger than the sum of its proper divisors (27475839).

57065121 is a wasteful number, since it uses less digits than its factorization.

57065121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113532 (or 2113526 counting only the distinct ones).

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

The square root of 57065121 is about 7554.1459477561. The cubic root of 57065121 is about 384.9966177248.

The spelling of 57065121 in words is "fifty-seven million, sixty-five thousand, one hundred twenty-one".