22372523 has 4 divisors (see below), whose sum is σ = 22581720. Its totient is φ = 22163328.

The previous prime is 22372501. The next prime is 22372547. The reversal of 22372523 is 32527322.

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

It is a cyclic number.

It is not a de Polignac number, because 22372523 - 2⁸ = 22372267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22372492 and 22372501.

It is not an unprimeable number, because it can be changed into a prime (22372723) 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, 104438 + ... + 104651.

It is an arithmetic number, because the mean of its divisors is an integer number (5645430).

Almost surely, 2^22372523 is an apocalyptic number.

22372523 is a deficient number, since it is larger than the sum of its proper divisors (209197).

22372523 is a wasteful number, since it uses less digits than its factorization.

22372523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209196.

The product of its digits is 5040, while the sum is 26.

The square root of 22372523 is about 4729.9601478237. The cubic root of 22372523 is about 281.7766410344.

Adding to 22372523 its reverse (32527322), we get a palindrome (54899845).

The spelling of 22372523 in words is "twenty-two million, three hundred seventy-two thousand, five hundred twenty-three".