22251049 has 2 divisors, whose sum is σ = 22251050. Its totient is φ = 22251048.

The previous prime is 22251041. The next prime is 22251067. The reversal of 22251049 is 94015222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13927824 + 8323225 = 3732^2 + 2885^2 .

It is a cyclic number.

It is not a de Polignac number, because 22251049 - 2³ = 22251041 is a prime.

It is not a weakly prime, because it can be changed into another prime (22251041) 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, 11125524 + 11125525.

It is an arithmetic number, because the mean of its divisors is an integer number (11125525).

Almost surely, 2^22251049 is an apocalyptic number.

It is an amenable number.

22251049 is a deficient number, since it is larger than the sum of its proper divisors (1).

22251049 is an equidigital number, since it uses as much as digits as its factorization.

22251049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 22251049 is about 4717.1017584954. The cubic root of 22251049 is about 281.2657364693.

The spelling of 22251049 in words is "twenty-two million, two hundred fifty-one thousand, forty-nine".