22507159 has 4 divisors (see below), whose sum is σ = 22614040. Its totient is φ = 22400280.

The previous prime is 22507157. The next prime is 22507171. The reversal of 22507159 is 95170522.

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 22507159 - 2¹ = 22507157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22507159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22507157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53124 + ... + 53545.

It is an arithmetic number, because the mean of its divisors is an integer number (5653510).

Almost surely, 2^22507159 is an apocalyptic number.

22507159 is a deficient number, since it is larger than the sum of its proper divisors (106881).

22507159 is a wasteful number, since it uses less digits than its factorization.

22507159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106880.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 22507159 is about 4744.1710550949. The cubic root of 22507159 is about 282.3407471645.

It can be divided in two parts, 2250 and 7159, that added together give a square (9409 = 97²).

The spelling of 22507159 in words is "twenty-two million, five hundred seven thousand, one hundred fifty-nine".