57117222 has 24 divisors (see below), whose sum is σ = 124245576. Its totient is φ = 18963456.

The previous prime is 57117187. The next prime is 57117227. The reversal of 57117222 is 22271175.

57117222 is a `hidden beast` number, since 571 + 1 + 72 + 22 = 666.

57117222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57117227) 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 11 ways as a sum of consecutive naturals, for example, 1548 + ... + 10799.

It is an arithmetic number, because the mean of its divisors is an integer number (5176899).

Almost surely, 2^57117222 is an apocalyptic number.

57117222 is an abundant number, since it is smaller than the sum of its proper divisors (67128354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57117222 is a wasteful number, since it uses less digits than its factorization.

57117222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12612 (or 12609 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 57117222 is about 7557.5936646528. The cubic root of 57117222 is about 385.1137506128.

Adding to 57117222 its reverse (22271175), we get a palindrome (79388397).

The spelling of 57117222 in words is "fifty-seven million, one hundred seventeen thousand, two hundred twenty-two".