22515465 has 16 divisors (see below), whose sum is σ = 41171328. Its totient is φ = 10292736.

The previous prime is 22515461. The next prime is 22515503. The reversal of 22515465 is 56451522.

It is not a de Polignac number, because 22515465 - 2² = 22515461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22515461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107112 + ... + 107321.

It is an arithmetic number, because the mean of its divisors is an integer number (2573208).

Almost surely, 2^22515465 is an apocalyptic number.

It is an amenable number.

22515465 is a deficient number, since it is larger than the sum of its proper divisors (18655863).

22515465 is a wasteful number, since it uses less digits than its factorization.

22515465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214448.

The product of its digits is 12000, while the sum is 30.

The square root of 22515465 is about 4745.0463643678. The cubic root of 22515465 is about 282.3754743940.

Adding to 22515465 its reverse (56451522), we get a palindrome (78966987).

The spelling of 22515465 in words is "twenty-two million, five hundred fifteen thousand, four hundred sixty-five".