22215589 has 4 divisors (see below), whose sum is σ = 24235200. Its totient is φ = 20195980.

The previous prime is 22215587. The next prime is 22215607. The reversal of 22215589 is 98551222.

It is a happy number.

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 22215589 - 2¹ = 22215587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22215581) 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, 1009789 + ... + 1009810.

It is an arithmetic number, because the mean of its divisors is an integer number (6058800).

Almost surely, 2^22215589 is an apocalyptic number.

It is an amenable number.

22215589 is a deficient number, since it is larger than the sum of its proper divisors (2019611).

22215589 is a wasteful number, since it uses less digits than its factorization.

22215589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019610.

The product of its digits is 14400, while the sum is 34.

The square root of 22215589 is about 4713.3415959381. The cubic root of 22215589 is about 281.1162456020.

The spelling of 22215589 in words is "twenty-two million, two hundred fifteen thousand, five hundred eighty-nine".