33132161 has 2 divisors, whose sum is σ = 33132162. Its totient is φ = 33132160.

The previous prime is 33132139. The next prime is 33132163. The reversal of 33132161 is 16123133.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33131536 + 625 = 5756^2 + 25^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33132161 is a prime.

Together with 33132163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33132163) 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, 16566080 + 16566081.

It is an arithmetic number, because the mean of its divisors is an integer number (16566081).

Almost surely, 2^33132161 is an apocalyptic number.

It is an amenable number.

33132161 is a deficient number, since it is larger than the sum of its proper divisors (1).

33132161 is an equidigital number, since it uses as much as digits as its factorization.

33132161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 20.

The square root of 33132161 is about 5756.0542909184. The cubic root of 33132161 is about 321.1810555211.

Adding to 33132161 its reverse (16123133), we get a palindrome (49255294).

Subtracting from 33132161 its reverse (16123133), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 33132161 in words is "thirty-three million, one hundred thirty-two thousand, one hundred sixty-one".