871172571 has 32 divisors (see below), whose sum is σ = 1220474880. Its totient is φ = 552096000.

The previous prime is 871172539. The next prime is 871172573. The reversal of 871172571 is 175271178.

It is not a de Polignac number, because 871172571 - 2⁵ = 871172539 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (871172573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1530775 + ... + 1531343.

It is an arithmetic number, because the mean of its divisors is an integer number (38139840).

Almost surely, 2^871172571 is an apocalyptic number.

871172571 is a deficient number, since it is larger than the sum of its proper divisors (349302309).

871172571 is a wasteful number, since it uses less digits than its factorization.

871172571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867.

The product of its digits is 27440, while the sum is 39.

The square root of 871172571 is about 29515.6326545781. The cubic root of 871172571 is about 955.0689609659.

The spelling of 871172571 in words is "eight hundred seventy-one million, one hundred seventy-two thousand, five hundred seventy-one".