2001033 has 6 divisors (see below), whose sum is σ = 2890394. Its totient is φ = 1334016.

The previous prime is 2000989. The next prime is 2001037. The reversal of 2001033 is 3301002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1814409 + 186624 = 1347^2 + 432^2 .

It is not a de Polignac number, because 2001033 - 2⁶ = 2000969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 222337 = 2001033 / (2 + 0 + 0 + 1 + 0 + 3 + 3).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2001037) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111160 + ... + 111177.

2^2001033 is an apocalyptic number.

It is an amenable number.

2001033 is a deficient number, since it is larger than the sum of its proper divisors (889361).

2001033 is a wasteful number, since it uses less digits than its factorization.

2001033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222343 (or 222340 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 2001033 is about 1414.5787358786. The cubic root of 2001033 is about 126.0137928967.

Adding to 2001033 its reverse (3301002), we get a palindrome (5302035).

The spelling of 2001033 in words is "two million, one thousand, thirty-three".