8971181 has 2 divisors, whose sum is σ = 8971182. Its totient is φ = 8971180.

The previous prime is 8971177. The next prime is 8971213. The reversal of 8971181 is 1811798.

8971181 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., 8970025 + 1156 = 2995^2 + 34^2 .

It is a cyclic number.

It is not a de Polignac number, because 8971181 - 2² = 8971177 is a prime.

It is a super-2 number, since 2×8971181² = 160964177069522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8971381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4485590 + 4485591.

It is an arithmetic number, because the mean of its divisors is an integer number (4485591).

Almost surely, 2^8971181 is an apocalyptic number.

It is an amenable number.

8971181 is a deficient number, since it is larger than the sum of its proper divisors (1).

8971181 is an equidigital number, since it uses as much as digits as its factorization.

8971181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 35.

The square root of 8971181 is about 2995.1929820965. The cubic root of 8971181 is about 207.7861229190.

The spelling of 8971181 in words is "eight million, nine hundred seventy-one thousand, one hundred eighty-one".