33227209 has 2 divisors, whose sum is σ = 33227210. Its totient is φ = 33227208.

The previous prime is 33227177. The next prime is 33227251. The reversal of 33227209 is 90272233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32775625 + 451584 = 5725^2 + 672^2 .

It is an emirp because it is prime and its reverse (90272233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33227209 - 2⁵ = 33227177 is a prime.

It is a super-2 number, since 2×33227209² = 2208094835859362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33227269) 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 as a sum of consecutive naturals, namely, 16613604 + 16613605.

It is an arithmetic number, because the mean of its divisors is an integer number (16613605).

Almost surely, 2^33227209 is an apocalyptic number.

It is an amenable number.

33227209 is a deficient number, since it is larger than the sum of its proper divisors (1).

33227209 is an equidigital number, since it uses as much as digits as its factorization.

33227209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 33227209 is about 5764.3047282391. The cubic root of 33227209 is about 321.4878920451.

The spelling of 33227209 in words is "thirty-three million, two hundred twenty-seven thousand, two hundred nine".