2001130755 has 128 divisors (see below), whose sum is σ = 3824271360. Its totient is φ = 885012480.

The previous prime is 2001130739. The next prime is 2001130759. The reversal of 2001130755 is 5570311002.

It is a Cunningham number, because it is equal to 44734²-1.

It is not a de Polignac number, because 2001130755 - 2⁴ = 2001130739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001130759) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5144101 + ... + 5144489.

It is an arithmetic number, because the mean of its divisors is an integer number (29877120).

Almost surely, 2^2001130755 is an apocalyptic number.

2001130755 is a deficient number, since it is larger than the sum of its proper divisors (1823140605).

2001130755 is a wasteful number, since it uses less digits than its factorization.

2001130755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 2001130755 is about 44733.9999888228. Note that the first 4 decimals coincide. The cubic root of 2001130755 is about 1260.1584488316.

Adding to 2001130755 its reverse (5570311002), we get a palindrome (7571441757).

The spelling of 2001130755 in words is "two billion, one million, one hundred thirty thousand, seven hundred fifty-five".