2001253404 has 24 divisors (see below), whose sum is σ = 4670951040. Its totient is φ = 666890224.

The previous prime is 2001253367. The next prime is 2001253439. The reversal of 2001253404 is 4043521002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22207 + ... + 67049.

It is an arithmetic number, because the mean of its divisors is an integer number (194622960).

Almost surely, 2^2001253404 is an apocalyptic number.

It is an amenable number.

2001253404 is an abundant number, since it is smaller than the sum of its proper divisors (2669697636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001253404 is a wasteful number, since it uses less digits than its factorization.

2001253404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48569 (or 48567 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2001253404 is about 44735.3708378504. The cubic root of 2001253404 is about 1260.1841932790.

Adding to 2001253404 its reverse (4043521002), we get a palindrome (6044774406).

The spelling of 2001253404 in words is "two billion, one million, two hundred fifty-three thousand, four hundred four".