22508159 has 4 divisors (see below), whose sum is σ = 22987104. Its totient is φ = 22029216.

The previous prime is 22508137. The next prime is 22508203. The reversal of 22508159 is 95180522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22508159 - 2²⁰ = 21459583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22508359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239402 + ... + 239495.

It is an arithmetic number, because the mean of its divisors is an integer number (5746776).

Almost surely, 2^22508159 is an apocalyptic number.

22508159 is a deficient number, since it is larger than the sum of its proper divisors (478945).

22508159 is an equidigital number, since it uses as much as digits as its factorization.

22508159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478944.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 22508159 is about 4744.2764464141. The cubic root of 22508159 is about 282.3449285980.

The spelling of 22508159 in words is "twenty-two million, five hundred eight thousand, one hundred fifty-nine".