22526009 has 4 divisors (see below), whose sum is σ = 24573840. Its totient is φ = 20478180.

The previous prime is 22525999. The next prime is 22526017. The reversal of 22526009 is 90062522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22526009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22526059) 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, 1023899 + ... + 1023920.

It is an arithmetic number, because the mean of its divisors is an integer number (6143460).

Almost surely, 2^22526009 is an apocalyptic number.

It is an amenable number.

22526009 is a deficient number, since it is larger than the sum of its proper divisors (2047831).

22526009 is a wasteful number, since it uses less digits than its factorization.

22526009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047830.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 22526009 is about 4746.1572877434. The cubic root of 22526009 is about 282.4195463590.

The spelling of 22526009 in words is "twenty-two million, five hundred twenty-six thousand, nine".