22249151 has 2 divisors, whose sum is σ = 22249152. Its totient is φ = 22249150.

The previous prime is 22249147. The next prime is 22249153. The reversal of 22249151 is 15194222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22249151 - 2² = 22249147 is a prime.

It is a Sophie Germain prime.

Together with 22249153, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22249151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22249153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11124575 + 11124576.

It is an arithmetic number, because the mean of its divisors is an integer number (11124576).

Almost surely, 2^22249151 is an apocalyptic number.

22249151 is a deficient number, since it is larger than the sum of its proper divisors (1).

22249151 is an equidigital number, since it uses as much as digits as its factorization.

22249151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 22249151 is about 4716.9005713498. The cubic root of 22249151 is about 281.2577389805.

The spelling of 22249151 in words is "twenty-two million, two hundred forty-nine thousand, one hundred fifty-one".