22522369 has 4 divisors (see below), whose sum is σ = 22721796. Its totient is φ = 22322944.

The previous prime is 22522363. The next prime is 22522427. The reversal of 22522369 is 96322522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6426225 + 16096144 = 2535^2 + 4012^2 .

It is a cyclic number.

It is not a de Polignac number, because 22522369 - 2⁹ = 22521857 is a prime.

It is a super-2 number, since 2×22522369² = 1014514210744322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 22522369.

It is not an unprimeable number, because it can be changed into a prime (22522363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99544 + ... + 99769.

It is an arithmetic number, because the mean of its divisors is an integer number (5680449).

Almost surely, 2^22522369 is an apocalyptic number.

It is an amenable number.

22522369 is a deficient number, since it is larger than the sum of its proper divisors (199427).

22522369 is a wasteful number, since it uses less digits than its factorization.

22522369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199426.

The product of its digits is 12960, while the sum is 31.

The square root of 22522369 is about 4745.7738041335. The cubic root of 22522369 is about 282.4043333886.

The spelling of 22522369 in words is "twenty-two million, five hundred twenty-two thousand, three hundred sixty-nine".