22542645 has 48 divisors (see below), whose sum is σ = 39940992. Its totient is φ = 10834560.

The previous prime is 22542631. The next prime is 22542671. The reversal of 22542645 is 54624522.

It is a happy number.

It is not a de Polignac number, because 22542645 - 2⁶ = 22542581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124455 + ... + 124635.

It is an arithmetic number, because the mean of its divisors is an integer number (832104).

Almost surely, 2^22542645 is an apocalyptic number.

It is an amenable number.

22542645 is a deficient number, since it is larger than the sum of its proper divisors (17398347).

22542645 is a wasteful number, since it uses less digits than its factorization.

22542645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 231 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 22542645 is about 4747.9095399976. The cubic root of 22542645 is about 282.4890537957.

The spelling of 22542645 in words is "twenty-two million, five hundred forty-two thousand, six hundred forty-five".