22504361 has 4 divisors (see below), whose sum is σ = 24550224. Its totient is φ = 20458500.

The previous prime is 22504337. The next prime is 22504381. The reversal of 22504361 is 16340522.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22504361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22504301) 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, 1022915 + ... + 1022936.

It is an arithmetic number, because the mean of its divisors is an integer number (6137556).

Almost surely, 2^22504361 is an apocalyptic number.

It is an amenable number.

22504361 is a deficient number, since it is larger than the sum of its proper divisors (2045863).

22504361 is a wasteful number, since it uses less digits than its factorization.

22504361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045862.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 22504361 is about 4743.8761577427. The cubic root of 22504361 is about 282.3290468555.

Adding to 22504361 its reverse (16340522), we get a palindrome (38844883).

The spelling of 22504361 in words is "twenty-two million, five hundred four thousand, three hundred sixty-one".