33564161 has 4 divisors (see below), whose sum is σ = 33765312. Its totient is φ = 33363012.

The previous prime is 33564151. The next prime is 33564169. The reversal of 33564161 is 16146533.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33564161 is a prime.

It is a super-2 number, since 2×33564161² = 2253105807267842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33564169) 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 in 3 ways as a sum of consecutive naturals, for example, 100325 + ... + 100658.

It is an arithmetic number, because the mean of its divisors is an integer number (8441328).

Almost surely, 2^33564161 is an apocalyptic number.

It is an amenable number.

33564161 is a deficient number, since it is larger than the sum of its proper divisors (201151).

33564161 is a wasteful number, since it uses less digits than its factorization.

33564161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201150.

The product of its digits is 6480, while the sum is 29.

The square root of 33564161 is about 5793.4584662359. The cubic root of 33564161 is about 322.5709588867.

The spelling of 33564161 in words is "thirty-three million, five hundred sixty-four thousand, one hundred sixty-one".