57216171 has 16 divisors (see below), whose sum is σ = 79085600. Its totient is φ = 36764928.

The previous prime is 57216143. The next prime is 57216193. The reversal of 57216171 is 17161275.

57216171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57216171 - 2⁵ = 57216139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57216121) 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 15 ways as a sum of consecutive naturals, for example, 9735 + ... + 14463.

It is an arithmetic number, because the mean of its divisors is an integer number (4942850).

Almost surely, 2^57216171 is an apocalyptic number.

57216171 is a deficient number, since it is larger than the sum of its proper divisors (21869429).

57216171 is a wasteful number, since it uses less digits than its factorization.

57216171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878.

The product of its digits is 2940, while the sum is 30.

The square root of 57216171 is about 7564.1371616332. The cubic root of 57216171 is about 385.3360107019.

The spelling of 57216171 in words is "fifty-seven million, two hundred sixteen thousand, one hundred seventy-one".