33001009 has 2 divisors, whose sum is σ = 33001010. Its totient is φ = 33001008.

The previous prime is 33000973. The next prime is 33001027. The reversal of 33001009 is 90010033.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28037025 + 4963984 = 5295^2 + 2228^2 .

It is a cyclic number.

It is not a de Polignac number, because 33001009 - 2⁹ = 33000497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33000983 and 33001001.

It is not a weakly prime, because it can be changed into another prime (33001039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16500504 + 16500505.

It is an arithmetic number, because the mean of its divisors is an integer number (16500505).

Almost surely, 2^33001009 is an apocalyptic number.

It is an amenable number.

33001009 is a deficient number, since it is larger than the sum of its proper divisors (1).

33001009 is an equidigital number, since it uses as much as digits as its factorization.

33001009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 33001009 is about 5744.6504680442. The cubic root of 33001009 is about 320.7567020593.

The spelling of 33001009 in words is "thirty-three million, one thousand, nine".