8105491 has 2 divisors, whose sum is σ = 8105492. Its totient is φ = 8105490.

The previous prime is 8105483. The next prime is 8105509. The reversal of 8105491 is 1945018.

It is a happy number.

8105491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8105491 - 2³ = 8105483 is a prime.

It is not a weakly prime, because it can be changed into another prime (8105401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4052745 + 4052746.

It is an arithmetic number, because the mean of its divisors is an integer number (4052746).

Almost surely, 2^8105491 is an apocalyptic number.

8105491 is a deficient number, since it is larger than the sum of its proper divisors (1).

8105491 is an equidigital number, since it uses as much as digits as its factorization.

8105491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 8105491 is about 2847.0144010876. The cubic root of 8105491 is about 200.8752557162.

The spelling of 8105491 in words is "eight million, one hundred five thousand, four hundred ninety-one".