8321161 has 2 divisors, whose sum is σ = 8321162. Its totient is φ = 8321160.

The previous prime is 8321153. The next prime is 8321171. The reversal of 8321161 is 1611238.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8231161 + 90000 = 2869^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 8321161 - 2³ = 8321153 is a prime.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 8321161 parts by 4079 straight cuts.

It is not a weakly prime, because it can be changed into another prime (8321111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4160580 + 4160581.

It is an arithmetic number, because the mean of its divisors is an integer number (4160581).

Almost surely, 2^8321161 is an apocalyptic number.

It is an amenable number.

8321161 is a deficient number, since it is larger than the sum of its proper divisors (1).

8321161 is an equidigital number, since it uses as much as digits as its factorization.

8321161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 22.

The square root of 8321161 is about 2884.6422655158. The cubic root of 8321161 is about 202.6413056307.

Adding to 8321161 its reverse (1611238), we get a palindrome (9932399).

The spelling of 8321161 in words is "eight million, three hundred twenty-one thousand, one hundred sixty-one".