22555443 has 4 divisors (see below), whose sum is σ = 30073928. Its totient is φ = 15036960.

The previous prime is 22555439. The next prime is 22555457. The reversal of 22555443 is 34455522.

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

It is not a de Polignac number, because 22555443 - 2² = 22555439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22555443.

It is not an unprimeable number, because it can be changed into a prime (22555343) 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, 3759238 + ... + 3759243.

It is an arithmetic number, because the mean of its divisors is an integer number (7518482).

Almost surely, 2^22555443 is an apocalyptic number.

22555443 is a deficient number, since it is larger than the sum of its proper divisors (7518485).

22555443 is an equidigital number, since it uses as much as digits as its factorization.

22555443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7518484.

The product of its digits is 24000, while the sum is 30.

The square root of 22555443 is about 4749.2570997999. The cubic root of 22555443 is about 282.5425022851.

The spelling of 22555443 in words is "twenty-two million, five hundred fifty-five thousand, four hundred forty-three".