22055149 has 2 divisors, whose sum is σ = 22055150. Its totient is φ = 22055148.

The previous prime is 22055113. The next prime is 22055191. The reversal of 22055149 is 94155022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21996100 + 59049 = 4690^2 + 243^2 .

It is a cyclic number.

It is not a de Polignac number, because 22055149 - 2⁷ = 22055021 is a prime.

It is a Chen prime.

It is equal to p_1392571 and since 22055149 and 1392571 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22055249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11027574 + 11027575.

It is an arithmetic number, because the mean of its divisors is an integer number (11027575).

Almost surely, 2^22055149 is an apocalyptic number.

It is an amenable number.

22055149 is a deficient number, since it is larger than the sum of its proper divisors (1).

22055149 is an equidigital number, since it uses as much as digits as its factorization.

22055149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 22055149 is about 4696.2909833186. The cubic root of 22055149 is about 280.4378735549.

The spelling of 22055149 in words is "twenty-two million, fifty-five thousand, one hundred forty-nine".