222161553 has 12 divisors (see below), whose sum is σ = 321054708. Its totient is φ = 148036320.

The previous prime is 222161549. The next prime is 222161561. The reversal of 222161553 is 355161222.

It is a happy number.

222161553 is a `hidden beast` number, since 22 + 21 + 615 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 93837969 + 128323584 = 9687^2 + 11328^2 .

It is not a de Polignac number, because 222161553 - 2² = 222161549 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222161353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19483 + ... + 28703.

It is an arithmetic number, because the mean of its divisors is an integer number (26754559).

Almost surely, 2^222161553 is an apocalyptic number.

It is an amenable number.

222161553 is a deficient number, since it is larger than the sum of its proper divisors (98893155).

222161553 is a wasteful number, since it uses less digits than its factorization.

222161553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11904 (or 11901 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 222161553 is about 14905.0848035159. The cubic root of 222161553 is about 605.6517376138.

The spelling of 222161553 in words is "two hundred twenty-two million, one hundred sixty-one thousand, five hundred fifty-three".