22055643 has 24 divisors (see below), whose sum is σ = 33965568. Its totient is φ = 13759152.

The previous prime is 22055633. The next prime is 22055651. The reversal of 22055643 is 34655022.

It is not a de Polignac number, because 22055643 - 2⁵ = 22055611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22055633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8596 + ... + 10862.

It is an arithmetic number, because the mean of its divisors is an integer number (1415232).

Almost surely, 2^22055643 is an apocalyptic number.

22055643 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22055643 is a deficient number, since it is larger than the sum of its proper divisors (11909925).

22055643 is a wasteful number, since it uses less digits than its factorization.

22055643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343 (or 2340 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 22055643 is about 4696.3435777209. The cubic root of 22055643 is about 280.4399673256.

The spelling of 22055643 in words is "twenty-two million, fifty-five thousand, six hundred forty-three".