871181 has 2 divisors, whose sum is σ = 871182. Its totient is φ = 871180.

The previous prime is 871177. The next prime is 871229. The reversal of 871181 is 181178.

871181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 469225 + 401956 = 685^2 + 634^2 .

It is a cyclic number.

It is not a de Polignac number, because 871181 - 2² = 871177 is a prime.

It is a super-2 number, since 2×871181² = 1517912669522, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 871181.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 871181.

It is not a weakly prime, because it can be changed into another prime (871681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435590 + 435591.

It is an arithmetic number, because the mean of its divisors is an integer number (435591).

2⁸⁷¹¹⁸¹ is an apocalyptic number.

It is an amenable number.

871181 is a deficient number, since it is larger than the sum of its proper divisors (1).

871181 is an equidigital number, since it uses as much as digits as its factorization.

871181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 26.

The square root of 871181 is about 933.3707730586. The cubic root of 871181 is about 95.5072041202.

The spelling of 871181 in words is "eight hundred seventy-one thousand, one hundred eighty-one".