33152213 has 2 divisors, whose sum is σ = 33152214. Its totient is φ = 33152212.

The previous prime is 33152173. The next prime is 33152221. The reversal of 33152213 is 31225133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30724849 + 2427364 = 5543^2 + 1558^2 .

It is an emirp because it is prime and its reverse (31225133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33152213 - 2⁸ = 33151957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33151213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16576106 + 16576107.

It is an arithmetic number, because the mean of its divisors is an integer number (16576107).

Almost surely, 2^33152213 is an apocalyptic number.

It is an amenable number.

33152213 is a deficient number, since it is larger than the sum of its proper divisors (1).

33152213 is an equidigital number, since it uses as much as digits as its factorization.

33152213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 20.

The square root of 33152213 is about 5757.7958456340. The cubic root of 33152213 is about 321.2458367238.

Adding to 33152213 its reverse (31225133), we get a palindrome (64377346).

The spelling of 33152213 in words is "thirty-three million, one hundred fifty-two thousand, two hundred thirteen".