22444001 has 4 divisors (see below), whose sum is σ = 22503600. Its totient is φ = 22384404.

The previous prime is 22443989. The next prime is 22444003. The reversal of 22444001 is 10044422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22444001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22444003) 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, 29231 + ... + 29988.

It is an arithmetic number, because the mean of its divisors is an integer number (5625900).

Almost surely, 2^22444001 is an apocalyptic number.

It is an amenable number.

22444001 is a deficient number, since it is larger than the sum of its proper divisors (59599).

22444001 is an equidigital number, since it uses as much as digits as its factorization.

22444001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59598.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 22444001 is about 4737.5099999894. The cubic root of 22444001 is about 282.0764048625.

Adding to 22444001 its reverse (10044422), we get a palindrome (32488423).

The spelling of 22444001 in words is "twenty-two million, four hundred forty-four thousand, one".