2001253 has 4 divisors (see below), whose sum is σ = 2088288. Its totient is φ = 1914220.

The previous prime is 2001247. The next prime is 2001269. The reversal of 2001253 is 3521002.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43483 + ... + 43528.

It is an arithmetic number, because the mean of its divisors is an integer number (522072).

2^2001253 is an apocalyptic number.

2001253 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2001253 is a deficient number, since it is larger than the sum of its proper divisors (87035).

2001253 is an equidigital number, since it uses as much as digits as its factorization.

2001253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87034.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 2001253 is about 1414.6564954080. The cubic root of 2001253 is about 126.0184108480.

Adding to 2001253 its reverse (3521002), we get a palindrome (5522255).

The spelling of 2001253 in words is "two million, one thousand, two hundred fifty-three".