33161291 has 8 divisors (see below), whose sum is σ = 33525600. Its totient is φ = 32799168.

The previous prime is 33161269. The next prime is 33161309. The reversal of 33161291 is 19216133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33161291 - 2¹⁴ = 33144907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33161291.

It is not an unprimeable number, because it can be changed into a prime (33161201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67850 + ... + 68336.

It is an arithmetic number, because the mean of its divisors is an integer number (4190700).

Almost surely, 2^33161291 is an apocalyptic number.

33161291 is a deficient number, since it is larger than the sum of its proper divisors (364309).

33161291 is a wasteful number, since it uses less digits than its factorization.

33161291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093.

The product of its digits is 972, while the sum is 26.

The square root of 33161291 is about 5758.5841141725. The cubic root of 33161291 is about 321.2751560693.

The spelling of 33161291 in words is "thirty-three million, one hundred sixty-one thousand, two hundred ninety-one".