2001135252 has 24 divisors (see below), whose sum is σ = 4915069600. Its totient is φ = 631937376.

The previous prime is 2001135211. The next prime is 2001135307. The reversal of 2001135252 is 2525311002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4388227 + ... + 4388682.

Almost surely, 2^2001135252 is an apocalyptic number.

It is an amenable number.

2001135252 is an abundant number, since it is smaller than the sum of its proper divisors (2913934348).

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

2001135252 is a wasteful number, since it uses less digits than its factorization.

2001135252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8776935 (or 8776933 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2001135252 is about 44734.0502525761. The cubic root of 2001135252 is about 1260.1593927860.

Adding to 2001135252 its reverse (2525311002), we get a palindrome (4526446254).

The spelling of 2001135252 in words is "two billion, one million, one hundred thirty-five thousand, two hundred fifty-two".