22545697 has 4 divisors (see below), whose sum is σ = 22629780. Its totient is φ = 22461616.

The previous prime is 22545641. The next prime is 22545709. The reversal of 22545697 is 79654522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11229201 + 11316496 = 3351^2 + 3364^2 .

It is a cyclic number.

It is not a de Polignac number, because 22545697 - 2²³ = 14157089 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22545097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41638 + ... + 42175.

It is an arithmetic number, because the mean of its divisors is an integer number (5657445).

Almost surely, 2^22545697 is an apocalyptic number.

It is an amenable number.

22545697 is a deficient number, since it is larger than the sum of its proper divisors (84083).

22545697 is an equidigital number, since it uses as much as digits as its factorization.

22545697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84082.

The product of its digits is 151200, while the sum is 40.

The square root of 22545697 is about 4748.2309337268. The cubic root of 22545697 is about 282.5018017480.

The spelling of 22545697 in words is "twenty-two million, five hundred forty-five thousand, six hundred ninety-seven".