8161001 has 2 divisors, whose sum is σ = 8161002. Its totient is φ = 8161000.

The previous prime is 8160991. The next prime is 8161031. The reversal of 8161001 is 1001618.

It is a happy number.

8161001 is digitally balanced in base 3, 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., 6635776 + 1525225 = 2576^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 8161001 - 2¹⁸ = 7898857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8161031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4080500 + 4080501.

It is an arithmetic number, because the mean of its divisors is an integer number (4080501).

Almost surely, 2^8161001 is an apocalyptic number.

It is an amenable number.

8161001 is a deficient number, since it is larger than the sum of its proper divisors (1).

8161001 is an equidigital number, since it uses as much as digits as its factorization.

8161001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 8161001 is about 2856.7465760897. The cubic root of 8161001 is about 201.3327738412.

Adding to 8161001 its reverse (1001618), we get a palindrome (9162619).

The spelling of 8161001 in words is "eight million, one hundred sixty-one thousand, one".