22445491 has 8 divisors (see below), whose sum is σ = 24346224. Its totient is φ = 20609280.

The previous prime is 22445483. The next prime is 22445503. The reversal of 22445491 is 19454422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22445491 - 2³ = 22445483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22445431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15405 + ... + 16798.

It is an arithmetic number, because the mean of its divisors is an integer number (3043278).

Almost surely, 2^22445491 is an apocalyptic number.

22445491 is a deficient number, since it is larger than the sum of its proper divisors (1900733).

22445491 is a wasteful number, since it uses less digits than its factorization.

22445491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32261.

The product of its digits is 11520, while the sum is 31.

The square root of 22445491 is about 4737.6672529843. The cubic root of 22445491 is about 282.0826468355.

The spelling of 22445491 in words is "twenty-two million, four hundred forty-five thousand, four hundred ninety-one".