22243579 has 2 divisors, whose sum is σ = 22243580. Its totient is φ = 22243578.

The previous prime is 22243541. The next prime is 22243591. The reversal of 22243579 is 97534222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22243579 - 2¹³ = 22235387 is a prime.

It is not a weakly prime, because it can be changed into another prime (22243379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11121789 + 11121790.

It is an arithmetic number, because the mean of its divisors is an integer number (11121790).

Almost surely, 2^22243579 is an apocalyptic number.

22243579 is a deficient number, since it is larger than the sum of its proper divisors (1).

22243579 is an equidigital number, since it uses as much as digits as its factorization.

22243579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 22243579 is about 4716.3098922781. The cubic root of 22243579 is about 281.2342579502.

It can be divided in two parts, 22243 and 579, that added together give a palindrome (22822).

The spelling of 22243579 in words is "twenty-two million, two hundred forty-three thousand, five hundred seventy-nine".