22243541 has 2 divisors, whose sum is σ = 22243542. Its totient is φ = 22243540.

The previous prime is 22243537. The next prime is 22243579. The reversal of 22243541 is 14534222.

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., 14092516 + 8151025 = 3754^2 + 2855^2 .

It is a cyclic number.

It is not a de Polignac number, because 22243541 - 2² = 22243537 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22243511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11121770 + 11121771.

It is an arithmetic number, because the mean of its divisors is an integer number (11121771).

Almost surely, 2^22243541 is an apocalyptic number.

It is an amenable number.

22243541 is a deficient number, since it is larger than the sum of its proper divisors (1).

22243541 is an equidigital number, since it uses as much as digits as its factorization.

22243541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 23.

The square root of 22243541 is about 4716.3058637031. The cubic root of 22243541 is about 281.2340978005.

Adding to 22243541 its reverse (14534222), we get a palindrome (36777763).

The spelling of 22243541 in words is "twenty-two million, two hundred forty-three thousand, five hundred forty-one".