6871571 has 4 divisors (see below), whose sum is σ = 7853232. Its totient is φ = 5889912.

The previous prime is 6871567. The next prime is 6871573. The reversal of 6871571 is 1751786.

6871571 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1751786 = 2 ⋅875893.

It is not a de Polignac number, because 6871571 - 2² = 6871567 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6871573) 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, 490820 + ... + 490833.

It is an arithmetic number, because the mean of its divisors is an integer number (1963308).

Almost surely, 2^6871571 is an apocalyptic number.

6871571 is a deficient number, since it is larger than the sum of its proper divisors (981661).

6871571 is an equidigital number, since it uses as much as digits as its factorization.

6871571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981660.

The product of its digits is 11760, while the sum is 35.

The square root of 6871571 is about 2621.3681542279. The cubic root of 6871571 is about 190.1160048742.

It can be divided in two parts, 68715 and 71, that added together give a palindrome (68786).

The spelling of 6871571 in words is "six million, eight hundred seventy-one thousand, five hundred seventy-one".