22515045 has 32 divisors (see below), whose sum is σ = 42964992. Its totient is φ = 9844032.

The previous prime is 22515043. The next prime is 22515121. The reversal of 22515045 is 54051522.

It is a happy number.

It is not a de Polignac number, because 22515045 - 2¹ = 22515043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22515043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2247 + ... + 7076.

It is an arithmetic number, because the mean of its divisors is an integer number (1342656).

Almost surely, 2^22515045 is an apocalyptic number.

It is an amenable number.

22515045 is a deficient number, since it is larger than the sum of its proper divisors (20449947).

22515045 is a wasteful number, since it uses less digits than its factorization.

22515045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9361.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 22515045 is about 4745.0021074811. The cubic root of 22515045 is about 282.3737185869.

Adding to 22515045 its reverse (54051522), we get a palindrome (76566567).

The spelling of 22515045 in words is "twenty-two million, five hundred fifteen thousand, forty-five".