22545197 has 2 divisors, whose sum is σ = 22545198. Its totient is φ = 22545196.

The previous prime is 22545169. The next prime is 22545199. The reversal of 22545197 is 79154522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21659716 + 885481 = 4654^2 + 941^2 .

It is a cyclic number.

It is not a de Polignac number, because 22545197 - 2¹⁰ = 22544173 is a prime.

Together with 22545199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22545199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11272598 + 11272599.

It is an arithmetic number, because the mean of its divisors is an integer number (11272599).

Almost surely, 2^22545197 is an apocalyptic number.

It is an amenable number.

22545197 is a deficient number, since it is larger than the sum of its proper divisors (1).

22545197 is an equidigital number, since it uses as much as digits as its factorization.

22545197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 35.

The square root of 22545197 is about 4748.1782822468. The cubic root of 22545197 is about 282.4997133680.

The spelling of 22545197 in words is "twenty-two million, five hundred forty-five thousand, one hundred ninety-seven".