57222771 has 16 divisors (see below), whose sum is σ = 79564800. Its totient is φ = 36535968.

The previous prime is 57222769. The next prime is 57222791. The reversal of 57222771 is 17722275.

It is not a de Polignac number, because 57222771 - 2¹ = 57222769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57222701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8460 + ... + 13638.

It is an arithmetic number, because the mean of its divisors is an integer number (4972800).

Almost surely, 2^57222771 is an apocalyptic number.

57222771 is a deficient number, since it is larger than the sum of its proper divisors (22342029).

57222771 is a wasteful number, since it uses less digits than its factorization.

57222771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5338.

The product of its digits is 13720, while the sum is 33.

The square root of 57222771 is about 7564.5734182438. The cubic root of 57222771 is about 385.3508265593.

The spelling of 57222771 in words is "fifty-seven million, two hundred twenty-two thousand, seven hundred seventy-one".