22056149 has 4 divisors (see below), whose sum is σ = 23015136. Its totient is φ = 21097164.

The previous prime is 22056127. The next prime is 22056163. The reversal of 22056149 is 94165022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22056149 - 2⁸ = 22055893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22056179) 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 in 3 ways as a sum of consecutive naturals, for example, 479459 + ... + 479504.

It is an arithmetic number, because the mean of its divisors is an integer number (5753784).

Almost surely, 2^22056149 is an apocalyptic number.

It is an amenable number.

22056149 is a deficient number, since it is larger than the sum of its proper divisors (958987).

22056149 is an equidigital number, since it uses as much as digits as its factorization.

22056149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958986.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 22056149 is about 4696.3974491093. The cubic root of 22056149 is about 280.4421119248.

The spelling of 22056149 in words is "twenty-two million, fifty-six thousand, one hundred forty-nine".