2001115552 has 24 divisors (see below), whose sum is σ = 4110988896. Its totient is φ = 957054912.

The previous prime is 2001115517. The next prime is 2001115573. The reversal of 2001115552 is 2555111002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1358718 + ... + 1360189.

It is an arithmetic number, because the mean of its divisors is an integer number (171291204).

Almost surely, 2^2001115552 is an apocalyptic number.

It is an amenable number.

2001115552 is an abundant number, since it is smaller than the sum of its proper divisors (2109873344).

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

2001115552 is a wasteful number, since it uses less digits than its factorization.

2001115552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718940 (or 2718932 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 2001115552 is about 44733.8300618223. The cubic root of 2001115552 is about 1260.1552575963.

Adding to 2001115552 its reverse (2555111002), we get a palindrome (4556226554).

The spelling of 2001115552 in words is "two billion, one million, one hundred fifteen thousand, five hundred fifty-two".