22745015 has 4 divisors (see below), whose sum is σ = 27294024. Its totient is φ = 18196008.

The previous prime is 22744991. The next prime is 22745027. The reversal of 22745015 is 51054722.

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 22745015 - 2⁶ = 22744951 is a prime.

It is a Duffinian number.

It is a congruent 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, 2274497 + ... + 2274506.

It is an arithmetic number, because the mean of its divisors is an integer number (6823506).

Almost surely, 2^22745015 is an apocalyptic number.

22745015 is a deficient number, since it is larger than the sum of its proper divisors (4549009).

22745015 is an equidigital number, since it uses as much as digits as its factorization.

22745015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549008.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 22745015 is about 4769.1734084640. The cubic root of 22745015 is about 283.3318577393.

Adding to 22745015 its reverse (51054722), we get a palindrome (73799737).

The spelling of 22745015 in words is "twenty-two million, seven hundred forty-five thousand, fifteen".