33209081 has 2 divisors, whose sum is σ = 33209082. Its totient is φ = 33209080.

The previous prime is 33209069. The next prime is 33209101. The reversal of 33209081 is 18090233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32959081 + 250000 = 5741^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 33209081 - 2¹⁴ = 33192697 is a prime.

It is a super-2 number, since 2×33209081² = 2205686121729122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33209081.

It is not a weakly prime, because it can be changed into another prime (33209881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16604540 + 16604541.

It is an arithmetic number, because the mean of its divisors is an integer number (16604541).

Almost surely, 2^33209081 is an apocalyptic number.

It is an amenable number.

33209081 is a deficient number, since it is larger than the sum of its proper divisors (1).

33209081 is an equidigital number, since it uses as much as digits as its factorization.

33209081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 33209081 is about 5762.7320777562. The cubic root of 33209081 is about 321.4294159460.

The spelling of 33209081 in words is "thirty-three million, two hundred nine thousand, eighty-one".