22172159 has 2 divisors, whose sum is σ = 22172160. Its totient is φ = 22172158.

The previous prime is 22172149. The next prime is 22172173. The reversal of 22172159 is 95127122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22172159 - 2²⁴ = 5394943 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22172119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11086079 + 11086080.

It is an arithmetic number, because the mean of its divisors is an integer number (11086080).

Almost surely, 2^22172159 is an apocalyptic number.

22172159 is a deficient number, since it is larger than the sum of its proper divisors (1).

22172159 is an equidigital number, since it uses as much as digits as its factorization.

22172159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 29.

The square root of 22172159 is about 4708.7322072932. The cubic root of 22172159 is about 280.9329382400.

The spelling of 22172159 in words is "twenty-two million, one hundred seventy-two thousand, one hundred fifty-nine".