22544005 has 8 divisors (see below), whose sum is σ = 29512224. Its totient is φ = 16395600.

The previous prime is 22544003. The next prime is 22544017. The reversal of 22544005 is 50044522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22544005 - 2¹ = 22544003 is a prime.

It is a super-2 number, since 2×22544005² = 1016464322880050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22544003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204891 + ... + 205000.

It is an arithmetic number, because the mean of its divisors is an integer number (3689028).

Almost surely, 2^22544005 is an apocalyptic number.

It is an amenable number.

22544005 is a deficient number, since it is larger than the sum of its proper divisors (6968219).

22544005 is a wasteful number, since it uses less digits than its factorization.

22544005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409907.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 22544005 is about 4748.0527587633. The cubic root of 22544005 is about 282.4947345457.

Adding to 22544005 its reverse (50044522), we get a palindrome (72588527).

The spelling of 22544005 in words is "twenty-two million, five hundred forty-four thousand, five".