2105291 has 4 divisors (see below), whose sum is σ = 2110992. Its totient is φ = 2099592.

The previous prime is 2105287. The next prime is 2105317. The reversal of 2105291 is 1925012.

2105291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2105291 - 2² = 2105287 is a prime.

It is a super-3 number, since 3×2105291³ = 27993529333830471513, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2255 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (527748).

2^2105291 is an apocalyptic number.

2105291 is a deficient number, since it is larger than the sum of its proper divisors (5701).

2105291 is an equidigital number, since it uses as much as digits as its factorization.

2105291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 2105291 is about 1450.9620946117. The cubic root of 2105291 is about 128.1653746247.

The spelling of 2105291 in words is "two million, one hundred five thousand, two hundred ninety-one".