22544473 has 4 divisors (see below), whose sum is σ = 25765120. Its totient is φ = 19323828.

The previous prime is 22544437. The next prime is 22544477. The reversal of 22544473 is 37444522.

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 22544473 - 2¹⁷ = 22413401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22544477) 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, 1610313 + ... + 1610326.

It is an arithmetic number, because the mean of its divisors is an integer number (6441280).

Almost surely, 2^22544473 is an apocalyptic number.

It is an amenable number.

22544473 is a deficient number, since it is larger than the sum of its proper divisors (3220647).

22544473 is an equidigital number, since it uses as much as digits as its factorization.

22544473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220646.

The product of its digits is 26880, while the sum is 31.

The square root of 22544473 is about 4748.1020418689. The cubic root of 22544473 is about 282.4966893391.

Adding to 22544473 its reverse (37444522), we get a palindrome (59988995).

The spelling of 22544473 in words is "twenty-two million, five hundred forty-four thousand, four hundred seventy-three".