22561315 has 24 divisors (see below), whose sum is σ = 31961952. Its totient is φ = 15240960.

The previous prime is 22561313. The next prime is 22561337. The reversal of 22561315 is 51316522.

It is not a de Polignac number, because 22561315 - 2¹ = 22561313 is a prime.

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 22561315.

It is not an unprimeable number, because it can be changed into a prime (22561313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16747 + ... + 18043.

It is an arithmetic number, because the mean of its divisors is an integer number (1331748).

Almost surely, 2^22561315 is an apocalyptic number.

22561315 is a deficient number, since it is larger than the sum of its proper divisors (9400637).

22561315 is a wasteful number, since it uses less digits than its factorization.

22561315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387 (or 1380 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 22561315 is about 4749.8752615200. The cubic root of 22561315 is about 282.5670188451.

Adding to 22561315 its reverse (51316522), we get a palindrome (73877837).

The spelling of 22561315 in words is "twenty-two million, five hundred sixty-one thousand, three hundred fifteen".