22981545 has 24 divisors (see below), whose sum is σ = 41932800. Its totient is φ = 11611296.

The previous prime is 22981513. The next prime is 22981547. The reversal of 22981545 is 54518922.

22981545 is a `hidden beast` number, since 22 + 98 + 1 + 545 = 666.

It is not a de Polignac number, because 22981545 - 2⁵ = 22981513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22981547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12585 + ... + 14294.

It is an arithmetic number, because the mean of its divisors is an integer number (1747200).

Almost surely, 2^22981545 is an apocalyptic number.

It is an amenable number.

22981545 is a deficient number, since it is larger than the sum of its proper divisors (18951255).

22981545 is a wasteful number, since it uses less digits than its factorization.

22981545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26909 (or 26906 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 22981545 is about 4793.9070704385. The cubic root of 22981545 is about 284.3106144941.

The spelling of 22981545 in words is "twenty-two million, nine hundred eighty-one thousand, five hundred forty-five".