22055191 has 2 divisors, whose sum is σ = 22055192. Its totient is φ = 22055190.

The previous prime is 22055149. The next prime is 22055207. The reversal of 22055191 is 19155022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22055191 - 2⁷ = 22055063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22055101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11027595 + 11027596.

It is an arithmetic number, because the mean of its divisors is an integer number (11027596).

Almost surely, 2^22055191 is an apocalyptic number.

22055191 is a deficient number, since it is larger than the sum of its proper divisors (1).

22055191 is an equidigital number, since it uses as much as digits as its factorization.

22055191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 22055191 is about 4696.2954549304. The cubic root of 22055191 is about 280.4380515690.

It can be divided in two parts, 2205 and 5191, that added together give a square (7396 = 86²).

The spelling of 22055191 in words is "twenty-two million, fifty-five thousand, one hundred ninety-one".