57168722 has 16 divisors (see below), whose sum is σ = 97782552. Its totient is φ = 24833280.

The previous prime is 57168689. The next prime is 57168733. The reversal of 57168722 is 22786175.

It is a Cunningham number, because it is equal to 7561²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 44502241 + 12666481 = 6671^2 + 3559^2 .

It is a super-2 number, since 2×57168722² = 6536525550226568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64229 + ... + 65112.

Almost surely, 2^57168722 is an apocalyptic number.

57168722 is a deficient number, since it is larger than the sum of its proper divisors (40613830).

57168722 is a wasteful number, since it uses less digits than its factorization.

57168722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129373.

The product of its digits is 47040, while the sum is 38.

The square root of 57168722 is about 7561.0000661288. Note that the first 4 decimals coincide. The cubic root of 57168722 is about 385.2294623573.

The spelling of 57168722 in words is "fifty-seven million, one hundred sixty-eight thousand, seven hundred twenty-two".