22555645 has 8 divisors (see below), whose sum is σ = 30933504. Its totient is φ = 15466704.

The previous prime is 22555639. The next prime is 22555667. The reversal of 22555645 is 54655522.

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

It is a cyclic number.

It is not a de Polignac number, because 22555645 - 2⁹ = 22555133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22555645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322189 + ... + 322258.

It is an arithmetic number, because the mean of its divisors is an integer number (3866688).

Almost surely, 2^22555645 is an apocalyptic number.

It is an amenable number.

22555645 is a deficient number, since it is larger than the sum of its proper divisors (8377859).

22555645 is an equidigital number, since it uses as much as digits as its factorization.

22555645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644459.

The product of its digits is 60000, while the sum is 34.

The square root of 22555645 is about 4749.2783662363. The cubic root of 22555645 is about 282.5433457388.

The spelling of 22555645 in words is "twenty-two million, five hundred fifty-five thousand, six hundred forty-five".