8115871 has 4 divisors (see below), whose sum is σ = 8136712. Its totient is φ = 8095032.

The previous prime is 8115857. The next prime is 8115883. The reversal of 8115871 is 1785118.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1785118 = 2 ⋅892559.

It is a cyclic number.

It is not a de Polignac number, because 8115871 - 2¹³ = 8107679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8115841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9825 + ... + 10618.

It is an arithmetic number, because the mean of its divisors is an integer number (2034178).

Almost surely, 2^8115871 is an apocalyptic number.

8115871 is a deficient number, since it is larger than the sum of its proper divisors (20841).

8115871 is a wasteful number, since it uses less digits than its factorization.

8115871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20840.

The product of its digits is 2240, while the sum is 31.

The square root of 8115871 is about 2848.8367801613. The cubic root of 8115871 is about 200.9609669838.

The spelling of 8115871 in words is "eight million, one hundred fifteen thousand, eight hundred seventy-one".