33109997 has 2 divisors, whose sum is σ = 33109998. Its totient is φ = 33109996.

The previous prime is 33109981. The next prime is 33110003. The reversal of 33109997 is 79990133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29311396 + 3798601 = 5414^2 + 1949^2 .

It is a cyclic number.

It is not a de Polignac number, because 33109997 - 2⁴ = 33109981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33109907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16554998 + 16554999.

It is an arithmetic number, because the mean of its divisors is an integer number (16554999).

Almost surely, 2^33109997 is an apocalyptic number.

It is an amenable number.

33109997 is a deficient number, since it is larger than the sum of its proper divisors (1).

33109997 is an equidigital number, since it uses as much as digits as its factorization.

33109997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 33109997 is about 5754.1286916439. The cubic root of 33109997 is about 321.1094207445.

The spelling of 33109997 in words is "thirty-three million, one hundred nine thousand, nine hundred ninety-seven".