33161 has 2 divisors, whose sum is σ = 33162. Its totient is φ = 33160.

The previous prime is 33151. The next prime is 33179. The reversal of 33161 is 16133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32761 + 400 = 181^2 + 20^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33161 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (33151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16580 + 16581.

It is an arithmetic number, because the mean of its divisors is an integer number (16581).

2³³¹⁶¹ is an apocalyptic number.

It is an amenable number.

33161 is a deficient number, since it is larger than the sum of its proper divisors (1).

33161 is an equidigital number, since it uses as much as digits as its factorization.

33161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54, while the sum is 14.

The square root of 33161 is about 182.1016199818. The cubic root of 33161 is about 32.1274216305.

Adding to 33161 its reverse (16133), we get a palindrome (49294).

The spelling of 33161 in words is "thirty-three thousand, one hundred sixty-one".