22055923 has 4 divisors (see below), whose sum is σ = 22168080. Its totient is φ = 21943768.

The previous prime is 22055893. The next prime is 22055927. The reversal of 22055923 is 32955022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22055923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22055891 and 22055900.

It is not an unprimeable number, because it can be changed into a prime (22055927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55783 + ... + 56176.

It is an arithmetic number, because the mean of its divisors is an integer number (5542020).

Almost surely, 2^22055923 is an apocalyptic number.

22055923 is a deficient number, since it is larger than the sum of its proper divisors (112157).

22055923 is a wasteful number, since it uses less digits than its factorization.

22055923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112156.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 22055923 is about 4696.3733880517. The cubic root of 22055923 is about 280.4411540644.

It can be divided in two parts, 2205 and 5923, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 22055923 in words is "twenty-two million, fifty-five thousand, nine hundred twenty-three".