22444559 has 4 divisors (see below), whose sum is σ = 22517040. Its totient is φ = 22372080.

The previous prime is 22444547. The next prime is 22444561. The reversal of 22444559 is 95544422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22444559 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444259) 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, 35774 + ... + 36395.

It is an arithmetic number, because the mean of its divisors is an integer number (5629260).

Almost surely, 2^22444559 is an apocalyptic number.

22444559 is a deficient number, since it is larger than the sum of its proper divisors (72481).

22444559 is an equidigital number, since it uses as much as digits as its factorization.

22444559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72480.

The product of its digits is 57600, while the sum is 35.

The square root of 22444559 is about 4737.5688913197. The cubic root of 22444559 is about 282.0787424928.

The spelling of 22444559 in words is "twenty-two million, four hundred forty-four thousand, five hundred fifty-nine".