33078161 has 2 divisors, whose sum is σ = 33078162. Its totient is φ = 33078160.

The previous prime is 33078139. The next prime is 33078167. The reversal of 33078161 is 16187033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29637136 + 3441025 = 5444^2 + 1855^2 .

It is an emirp because it is prime and its reverse (16187033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33078161 - 2¹⁰ = 33077137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33078167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16539080 + 16539081.

It is an arithmetic number, because the mean of its divisors is an integer number (16539081).

Almost surely, 2^33078161 is an apocalyptic number.

It is an amenable number.

33078161 is a deficient number, since it is larger than the sum of its proper divisors (1).

33078161 is an equidigital number, since it uses as much as digits as its factorization.

33078161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 33078161 is about 5751.3616648582. The cubic root of 33078161 is about 321.0064697861.

The spelling of 33078161 in words is "thirty-three million, seventy-eight thousand, one hundred sixty-one".