22545169 has 2 divisors, whose sum is σ = 22545170. Its totient is φ = 22545168.

The previous prime is 22545163. The next prime is 22545197. The reversal of 22545169 is 96154522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22202944 + 342225 = 4712^2 + 585^2 .

It is a cyclic number.

It is not a de Polignac number, because 22545169 - 2¹³ = 22536977 is a prime.

It is a super-2 number, since 2×22545169² = 1016569290477122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22545163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11272584 + 11272585.

It is an arithmetic number, because the mean of its divisors is an integer number (11272585).

Almost surely, 2^22545169 is an apocalyptic number.

It is an amenable number.

22545169 is a deficient number, since it is larger than the sum of its proper divisors (1).

22545169 is an equidigital number, since it uses as much as digits as its factorization.

22545169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 34.

The square root of 22545169 is about 4748.1753337466. The cubic root of 22545169 is about 282.4995964178.

The spelling of 22545169 in words is "twenty-two million, five hundred forty-five thousand, one hundred sixty-nine".