2001105255 has 16 divisors (see below), whose sum is σ = 3203796960. Its totient is φ = 1066579968.

The previous prime is 2001105217. The next prime is 2001105311. The reversal of 2001105255 is 5525011002.

It is not a de Polignac number, because 2001105255 - 2⁶ = 2001105191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17322 + ... + 65591.

It is an arithmetic number, because the mean of its divisors is an integer number (200237310).

Almost surely, 2^2001105255 is an apocalyptic number.

2001105255 is a deficient number, since it is larger than the sum of its proper divisors (1202691705).

2001105255 is a wasteful number, since it uses less digits than its factorization.

2001105255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84530.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 2001105255 is about 44733.7149698077. The cubic root of 2001105255 is about 1260.1530961617.

Adding to 2001105255 its reverse (5525011002), we get a palindrome (7526116257).

The spelling of 2001105255 in words is "two billion, one million, one hundred five thousand, two hundred fifty-five".