22504169 has 4 divisors (see below), whose sum is σ = 22520400. Its totient is φ = 22487940.

The previous prime is 22504159. The next prime is 22504187. The reversal of 22504169 is 96140522.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96140522 = 2 ⋅48070261.

It is a cyclic number.

It is not a de Polignac number, because 22504169 - 2²⁰ = 21455593 is a prime.

It is a super-2 number, since 2×22504169² = 1012875244761122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22504129) 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, 5819 + ... + 8880.

It is an arithmetic number, because the mean of its divisors is an integer number (5630100).

Almost surely, 2^22504169 is an apocalyptic number.

It is an amenable number.

22504169 is a deficient number, since it is larger than the sum of its proper divisors (16231).

22504169 is a wasteful number, since it uses less digits than its factorization.

22504169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16230.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 22504169 is about 4743.8559210836. The cubic root of 22504169 is about 282.3282439395.

The spelling of 22504169 in words is "twenty-two million, five hundred four thousand, one hundred sixty-nine".