33004161 has 6 divisors (see below), whose sum is σ = 47672690. Its totient is φ = 22002768.

The previous prime is 33004151. The next prime is 33004163. The reversal of 33004161 is 16140033.

It can be written as a sum of positive squares in only one way, i.e., 26471025 + 6533136 = 5145^2 + 2556^2 .

It is not a de Polignac number, because 33004161 - 2⁵ = 33004129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33004163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1833556 + ... + 1833573.

Almost surely, 2^33004161 is an apocalyptic number.

It is an amenable number.

33004161 is a deficient number, since it is larger than the sum of its proper divisors (14668529).

33004161 is a wasteful number, since it uses less digits than its factorization.

33004161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3667135 (or 3667132 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 33004161 is about 5744.9248036854. The cubic root of 33004161 is about 320.7669137970.

Adding to 33004161 its reverse (16140033), we get a palindrome (49144194).

The spelling of 33004161 in words is "thirty-three million, four thousand, one hundred sixty-one".