33504161 has 16 divisors (see below), whose sum is σ = 36345024. Its totient is φ = 30772224.

The previous prime is 33504157. The next prime is 33504173. The reversal of 33504161 is 16140533.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 33504161 - 2² = 33504157 is a prime.

It is a super-2 number, since 2×33504161² = 2245057608627842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33504131) 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 in 15 ways as a sum of consecutive naturals, for example, 205466 + ... + 205628.

It is an arithmetic number, because the mean of its divisors is an integer number (2271564).

Almost surely, 2^33504161 is an apocalyptic number.

It is an amenable number.

33504161 is a deficient number, since it is larger than the sum of its proper divisors (2840863).

33504161 is a wasteful number, since it uses less digits than its factorization.

33504161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 33504161 is about 5788.2778958858. The cubic root of 33504161 is about 322.3786326959.

Adding to 33504161 its reverse (16140533), we get a palindrome (49644694).

The spelling of 33504161 in words is "thirty-three million, five hundred four thousand, one hundred sixty-one".