22576321 has 4 divisors (see below), whose sum is σ = 22587012. Its totient is φ = 22565632.

The previous prime is 22576319. The next prime is 22576349. The reversal of 22576321 is 12367522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12367522 = 2 ⋅6183761.

It can be written as a sum of positive squares in 2 ways, for example, as 13359025 + 9217296 = 3655^2 + 3036^2 .

It is a cyclic number.

It is not a de Polignac number, because 22576321 - 2¹ = 22576319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22576321.

It is not an unprimeable number, because it can be changed into a prime (22576361) 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, 1000 + ... + 6793.

It is an arithmetic number, because the mean of its divisors is an integer number (5646753).

Almost surely, 2^22576321 is an apocalyptic number.

It is an amenable number.

22576321 is a deficient number, since it is larger than the sum of its proper divisors (10691).

22576321 is an equidigital number, since it uses as much as digits as its factorization.

22576321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10690.

The product of its digits is 5040, while the sum is 28.

The square root of 22576321 is about 4751.4546193771. The cubic root of 22576321 is about 282.6296520287.

The spelling of 22576321 in words is "twenty-two million, five hundred seventy-six thousand, three hundred twenty-one".