22252149 has 6 divisors (see below), whose sum is σ = 32142006. Its totient is φ = 14834760.

The previous prime is 22252147. The next prime is 22252151. The reversal of 22252149 is 94125222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22252147) and next prime (22252151).

It can be written as a sum of positive squares in only one way, i.e., 17766225 + 4485924 = 4215^2 + 2118^2 .

It is not a de Polignac number, because 22252149 - 2¹ = 22252147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22252147) 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 5 ways as a sum of consecutive naturals, for example, 1236222 + ... + 1236239.

It is an arithmetic number, because the mean of its divisors is an integer number (5357001).

Almost surely, 2^22252149 is an apocalyptic number.

It is an amenable number.

22252149 is a deficient number, since it is larger than the sum of its proper divisors (9889857).

22252149 is a wasteful number, since it uses less digits than its factorization.

22252149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472467 (or 2472464 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 22252149 is about 4717.2183540727. The cubic root of 22252149 is about 281.2703712652.

The spelling of 22252149 in words is "twenty-two million, two hundred fifty-two thousand, one hundred forty-nine".