57256971 has 4 divisors (see below), whose sum is σ = 76342632. Its totient is φ = 38171312.

The previous prime is 57256961. The next prime is 57256973. The reversal of 57256971 is 17965275.

57256971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57256971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57256973) 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 3 ways as a sum of consecutive naturals, for example, 9542826 + ... + 9542831.

It is an arithmetic number, because the mean of its divisors is an integer number (19085658).

Almost surely, 2^57256971 is an apocalyptic number.

57256971 is a deficient number, since it is larger than the sum of its proper divisors (19085661).

57256971 is a wasteful number, since it uses less digits than its factorization.

57256971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19085660.

The product of its digits is 132300, while the sum is 42.

The square root of 57256971 is about 7566.8336178351. The cubic root of 57256971 is about 385.4275813976.

The spelling of 57256971 in words is "fifty-seven million, two hundred fifty-six thousand, nine hundred seventy-one".