2001583 has 2 divisors, whose sum is σ = 2001584. Its totient is φ = 2001582.

The previous prime is 2001581. The next prime is 2001611. The reversal of 2001583 is 3851002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001583 - 2¹ = 2001581 is a prime.

Together with 2001581, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2001583.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000791 + 1000792.

It is an arithmetic number, because the mean of its divisors is an integer number (1000792).

2^2001583 is an apocalyptic number.

2001583 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001583 is an equidigital number, since it uses as much as digits as its factorization.

2001583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2001583 is about 1414.7731266885. The cubic root of 2001583 is about 126.0253371403.

Adding to 2001583 its reverse (3851002), we get a palindrome (5852585).

The spelling of 2001583 in words is "two million, one thousand, five hundred eighty-three".