8856181 has 2 divisors, whose sum is σ = 8856182. Its totient is φ = 8856180.

The previous prime is 8856179. The next prime is 8856187. The reversal of 8856181 is 1816588.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6937956 + 1918225 = 2634^2 + 1385^2 .

It is a cyclic number.

It is not a de Polignac number, because 8856181 - 2¹ = 8856179 is a prime.

It is a super-2 number, since 2×8856181² = 156863883809522, which contains 22 as substring.

Together with 8856179, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8856181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8856187) 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 as a sum of consecutive naturals, namely, 4428090 + 4428091.

It is an arithmetic number, because the mean of its divisors is an integer number (4428091).

Almost surely, 2^8856181 is an apocalyptic number.

It is an amenable number.

8856181 is a deficient number, since it is larger than the sum of its proper divisors (1).

8856181 is an equidigital number, since it uses as much as digits as its factorization.

8856181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 37.

The square root of 8856181 is about 2975.9336350127. The cubic root of 8856181 is about 206.8944439150.

The spelling of 8856181 in words is "eight million, eight hundred fifty-six thousand, one hundred eighty-one".