22522513 has 4 divisors (see below), whose sum is σ = 24255028. Its totient is φ = 20790000.

The previous prime is 22522477. The next prime is 22522517. The reversal of 22522513 is 31522522.

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 1067089 + 21455424 = 1033^2 + 4632^2 .

It is a cyclic number.

It is not a de Polignac number, because 22522513 - 2⁹ = 22522001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22522517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866238 + ... + 866263.

It is an arithmetic number, because the mean of its divisors is an integer number (6063757).

Almost surely, 2^22522513 is an apocalyptic number.

It is an amenable number.

22522513 is a deficient number, since it is larger than the sum of its proper divisors (1732515).

22522513 is a wasteful number, since it uses less digits than its factorization.

22522513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732514.

The product of its digits is 1200, while the sum is 22.

The square root of 22522513 is about 4745.7889755024. The cubic root of 22522513 is about 282.4049352515.

Subtracting 22522513 from its reverse (31522522), we obtain a palindrome (9000009).

The spelling of 22522513 in words is "twenty-two million, five hundred twenty-two thousand, five hundred thirteen".