57166257 has 8 divisors (see below), whose sum is σ = 80705376. Its totient is φ = 35868992.

The previous prime is 57166229. The next prime is 57166261. The reversal of 57166257 is 75266175.

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 57166257 - 2¹⁹ = 56641969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57166267) 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, 560403 + ... + 560504.

It is an arithmetic number, because the mean of its divisors is an integer number (10088172).

Almost surely, 2^57166257 is an apocalyptic number.

It is an amenable number.

57166257 is a deficient number, since it is larger than the sum of its proper divisors (23539119).

57166257 is a wasteful number, since it uses less digits than its factorization.

57166257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120927.

The product of its digits is 88200, while the sum is 39.

The square root of 57166257 is about 7560.8370568344. The cubic root of 57166257 is about 385.2239255052.

The spelling of 57166257 in words is "fifty-seven million, one hundred sixty-six thousand, two hundred fifty-seven".