22089561 has 16 divisors (see below), whose sum is σ = 32813760. Its totient is φ = 13124160.

The previous prime is 22089539. The next prime is 22089583. The reversal of 22089561 is 16598022.

It is an interprime number because it is at equal distance from previous prime (22089539) and next prime (22089583).

It is not a de Polignac number, because 22089561 - 2⁶ = 22089497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22089161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8635 + ... + 10896.

It is an arithmetic number, because the mean of its divisors is an integer number (2050860).

Almost surely, 2^22089561 is an apocalyptic number.

It is an amenable number.

22089561 is a deficient number, since it is larger than the sum of its proper divisors (10724199).

22089561 is a wasteful number, since it uses less digits than its factorization.

22089561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19576.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 22089561 is about 4699.9532976403. The cubic root of 22089561 is about 280.5836507512.

The spelling of 22089561 in words is "twenty-two million, eighty-nine thousand, five hundred sixty-one".