33091249 has 2 divisors, whose sum is σ = 33091250. Its totient is φ = 33091248.

The previous prime is 33091237. The next prime is 33091301. The reversal of 33091249 is 94219033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29778849 + 3312400 = 5457^2 + 1820^2 .

It is an emirp because it is prime and its reverse (94219033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33091249 - 2¹¹ = 33089201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33091249.

It is not a weakly prime, because it can be changed into another prime (33091049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16545624 + 16545625.

It is an arithmetic number, because the mean of its divisors is an integer number (16545625).

Almost surely, 2^33091249 is an apocalyptic number.

It is an amenable number.

33091249 is a deficient number, since it is larger than the sum of its proper divisors (1).

33091249 is an equidigital number, since it uses as much as digits as its factorization.

33091249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 33091249 is about 5752.4993698392. The cubic root of 33091249 is about 321.0488016304.

The spelling of 33091249 in words is "thirty-three million, ninety-one thousand, two hundred forty-nine".