22452515 has 4 divisors (see below), whose sum is σ = 26943024. Its totient is φ = 17962008.

The previous prime is 22452503. The next prime is 22452517. The reversal of 22452515 is 51525422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22452515 - 2¹⁰ = 22451491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22452517) 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, 2245247 + ... + 2245256.

It is an arithmetic number, because the mean of its divisors is an integer number (6735756).

Almost surely, 2^22452515 is an apocalyptic number.

22452515 is a deficient number, since it is larger than the sum of its proper divisors (4490509).

22452515 is an equidigital number, since it uses as much as digits as its factorization.

22452515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490508.

The product of its digits is 4000, while the sum is 26.

The square root of 22452515 is about 4738.4084880896. The cubic root of 22452515 is about 282.1120683626.

Adding to 22452515 its reverse (51525422), we get a palindrome (73977937).

The spelling of 22452515 in words is "twenty-two million, four hundred fifty-two thousand, five hundred fifteen".