22615465 has 4 divisors (see below), whose sum is σ = 27138564. Its totient is φ = 18092368.

The previous prime is 22615451. The next prime is 22615487. The reversal of 22615465 is 56451622.

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 6487209 + 16128256 = 2547^2 + 4016^2 .

It is a cyclic number.

It is not a de Polignac number, because 22615465 - 2⁵ = 22615433 is a prime.

It is a super-2 number, since 2×22615465² = 1022918514332450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2261542 + ... + 2261551.

It is an arithmetic number, because the mean of its divisors is an integer number (6784641).

Almost surely, 2^22615465 is an apocalyptic number.

It is an amenable number.

22615465 is a deficient number, since it is larger than the sum of its proper divisors (4523099).

22615465 is an equidigital number, since it uses as much as digits as its factorization.

22615465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4523098.

The product of its digits is 14400, while the sum is 31.

The square root of 22615465 is about 4755.5719950391. The cubic root of 22615465 is about 282.7929037122.

The spelling of 22615465 in words is "twenty-two million, six hundred fifteen thousand, four hundred sixty-five".