22509901 has 4 divisors (see below), whose sum is σ = 22528192. Its totient is φ = 22491612.

The previous prime is 22509881. The next prime is 22509919. The reversal of 22509901 is 10990522.

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 not a de Polignac number, because 22509901 - 2²³ = 14121293 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 22509901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22509101) 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, 7155 + ... + 9808.

It is an arithmetic number, because the mean of its divisors is an integer number (5632048).

Almost surely, 2^22509901 is an apocalyptic number.

It is an amenable number.

22509901 is a deficient number, since it is larger than the sum of its proper divisors (18291).

22509901 is a wasteful number, since it uses less digits than its factorization.

22509901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18290.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 22509901 is about 4744.4600325011. The cubic root of 22509901 is about 282.3522123594.

The spelling of 22509901 in words is "twenty-two million, five hundred nine thousand, nine hundred one".