57856121 has 8 divisors (see below), whose sum is σ = 61900800. Its totient is φ = 53911440.

The previous prime is 57856111. The next prime is 57856153. The reversal of 57856121 is 12165875.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57856121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57856111) 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, 23801 + ... + 26118.

It is an arithmetic number, because the mean of its divisors is an integer number (7737600).

Almost surely, 2^57856121 is an apocalyptic number.

It is an amenable number.

57856121 is a deficient number, since it is larger than the sum of its proper divisors (4044679).

57856121 is a wasteful number, since it uses less digits than its factorization.

57856121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49999.

The product of its digits is 16800, while the sum is 35.

The square root of 57856121 is about 7606.3211212780. The cubic root of 57856121 is about 386.7673197969.

The spelling of 57856121 in words is "fifty-seven million, eight hundred fifty-six thousand, one hundred twenty-one".