22445861 has 4 divisors (see below), whose sum is σ = 23421792. Its totient is φ = 21469932.

The previous prime is 22445849. The next prime is 22445867. The reversal of 22445861 is 16854422.

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 22445861 - 2¹⁸ = 22183717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22445867) 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, 487931 + ... + 487976.

It is an arithmetic number, because the mean of its divisors is an integer number (5855448).

Almost surely, 2^22445861 is an apocalyptic number.

It is an amenable number.

22445861 is a deficient number, since it is larger than the sum of its proper divisors (975931).

22445861 is an equidigital number, since it uses as much as digits as its factorization.

22445861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975930.

The product of its digits is 15360, while the sum is 32.

The square root of 22445861 is about 4737.7063015767. The cubic root of 22445861 is about 282.0841968128.

The spelling of 22445861 in words is "twenty-two million, four hundred forty-five thousand, eight hundred sixty-one".