57222017 has 16 divisors (see below), whose sum is σ = 64391760. Its totient is φ = 50577408.

The previous prime is 57222007. The next prime is 57222031. The reversal of 57222017 is 71022275.

It can be written as a sum of positive squares in 8 ways, for example, as 27290176 + 29931841 = 5224^2 + 5471^2 .

It is a cyclic number.

It is not a de Polignac number, because 57222017 - 2⁸ = 57221761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57222007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16673 + ... + 19809.

It is an arithmetic number, because the mean of its divisors is an integer number (4024485).

Almost surely, 2^57222017 is an apocalyptic number.

It is an amenable number.

57222017 is a deficient number, since it is larger than the sum of its proper divisors (7169743).

57222017 is a wasteful number, since it uses less digits than its factorization.

57222017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 57222017 is about 7564.5235805039. The cubic root of 57222017 is about 385.3491340175.

The spelling of 57222017 in words is "fifty-seven million, two hundred twenty-two thousand, seventeen".