2105641255 has 4 divisors (see below), whose sum is σ = 2526769512. Its totient is φ = 1684513000.

The previous prime is 2105641247. The next prime is 2105641319. The reversal of 2105641255 is 5521465012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2105641255 - 2³ = 2105641247 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent 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, 210564121 + ... + 210564130.

It is an arithmetic number, because the mean of its divisors is an integer number (631692378).

Almost surely, 2^2105641255 is an apocalyptic number.

2105641255 is a deficient number, since it is larger than the sum of its proper divisors (421128257).

2105641255 is an equidigital number, since it uses as much as digits as its factorization.

2105641255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421128256.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 2105641255 is about 45887.2668068169. The cubic root of 2105641255 is about 1281.7248180905.

It can be divided in two parts, 210 and 5641255, that added together give a palindrome (5641465).

The spelling of 2105641255 in words is "two billion, one hundred five million, six hundred forty-one thousand, two hundred fifty-five".