22422245 has 4 divisors (see below), whose sum is σ = 26906700. Its totient is φ = 17937792.

The previous prime is 22422227. The next prime is 22422247. The reversal of 22422245 is 54222422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54222422 = 2 ⋅27111211.

It can be written as a sum of positive squares in 2 ways, for example, as 5166529 + 17255716 = 2273^2 + 4154^2 .

It is a cyclic number.

It is not a de Polignac number, because 22422245 - 2¹⁴ = 22405861 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22422245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22422247) 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, 2242220 + ... + 2242229.

It is an arithmetic number, because the mean of its divisors is an integer number (6726675).

Almost surely, 2^22422245 is an apocalyptic number.

It is an amenable number.

22422245 is a deficient number, since it is larger than the sum of its proper divisors (4484455).

22422245 is an equidigital number, since it uses as much as digits as its factorization.

22422245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484454.

The product of its digits is 2560, while the sum is 23.

The square root of 22422245 is about 4735.2133003699. The cubic root of 22422245 is about 281.9852321962.

Adding to 22422245 its reverse (54222422), we get a palindrome (76644667).

The spelling of 22422245 in words is "twenty-two million, four hundred twenty-two thousand, two hundred forty-five".