33380081 has 4 divisors (see below), whose sum is σ = 38148672. Its totient is φ = 28611492.

The previous prime is 33380077. The next prime is 33380111. The reversal of 33380081 is 18008333.

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 not a de Polignac number, because 33380081 - 2² = 33380077 is a prime.

It is a super-2 number, since 2×33380081² = 2228459615133122, which contains 22 as substring.

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 33380081.

It is not an unprimeable number, because it can be changed into a prime (33380021) 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 3 ways as a sum of consecutive naturals, for example, 2384285 + ... + 2384298.

It is an arithmetic number, because the mean of its divisors is an integer number (9537168).

Almost surely, 2^33380081 is an apocalyptic number.

It is an amenable number.

33380081 is a deficient number, since it is larger than the sum of its proper divisors (4768591).

33380081 is an equidigital number, since it uses as much as digits as its factorization.

33380081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768590.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 33380081 is about 5777.5497401580. The cubic root of 33380081 is about 321.9801725121.

The spelling of 33380081 in words is "thirty-three million, three hundred eighty thousand, eighty-one".