22245889 has 2 divisors, whose sum is σ = 22245890. Its totient is φ = 22245888.

The previous prime is 22245869. The next prime is 22245893. The reversal of 22245889 is 98854222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16524225 + 5721664 = 4065^2 + 2392^2 .

It is a cyclic number.

It is not a de Polignac number, because 22245889 - 2¹⁷ = 22114817 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (22245859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11122944 + 11122945.

It is an arithmetic number, because the mean of its divisors is an integer number (11122945).

Almost surely, 2^22245889 is an apocalyptic number.

It is an amenable number.

22245889 is a deficient number, since it is larger than the sum of its proper divisors (1).

22245889 is an equidigital number, since it uses as much as digits as its factorization.

22245889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 40.

The square root of 22245889 is about 4716.5547807695. The cubic root of 22245889 is about 281.2439930240.

The spelling of 22245889 in words is "twenty-two million, two hundred forty-five thousand, eight hundred eighty-nine".