22642159 has 2 divisors, whose sum is σ = 22642160. Its totient is φ = 22642158.

The previous prime is 22642153. The next prime is 22642177. The reversal of 22642159 is 95124622.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22642159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22642159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22642153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11321079 + 11321080.

It is an arithmetic number, because the mean of its divisors is an integer number (11321080).

Almost surely, 2^22642159 is an apocalyptic number.

22642159 is a deficient number, since it is larger than the sum of its proper divisors (1).

22642159 is an equidigital number, since it uses as much as digits as its factorization.

22642159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 22642159 is about 4758.3777697867. The cubic root of 22642159 is about 282.9041241482.

It can be divided in two parts, 22642 and 159, that added together give a square (22801 = 151²).

The spelling of 22642159 in words is "twenty-two million, six hundred forty-two thousand, one hundred fifty-nine".