22972545 has 16 divisors (see below), whose sum is σ = 40840320. Its totient is φ = 12251952.

The previous prime is 22972531. The next prime is 22972567. The reversal of 22972545 is 54527922.

It is a happy number.

22972545 is a `hidden beast` number, since 22 + 97 + 2 + 545 = 666.

It is not a de Polignac number, because 22972545 - 2⁴ = 22972529 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84949 + ... + 85218.

It is an arithmetic number, because the mean of its divisors is an integer number (2552520).

Almost surely, 2^22972545 is an apocalyptic number.

It is an amenable number.

22972545 is a deficient number, since it is larger than the sum of its proper divisors (17867775).

22972545 is a wasteful number, since it uses less digits than its factorization.

22972545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170181 (or 170175 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 22972545 is about 4792.9682869804. The cubic root of 22972545 is about 284.2734958753.

The spelling of 22972545 in words is "twenty-two million, nine hundred seventy-two thousand, five hundred forty-five".