1326161 has 2 divisors, whose sum is σ = 1326162. Its totient is φ = 1326160.

The previous prime is 1326151. The next prime is 1326167. The reversal of 1326161 is 1616231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1030225 + 295936 = 1015^2 + 544^2 .

It is an emirp because it is prime and its reverse (1616231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1326161 - 2⁶ = 1326097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1326167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663080 + 663081.

It is an arithmetic number, because the mean of its divisors is an integer number (663081).

2^1326161 is an apocalyptic number.

It is an amenable number.

1326161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326161 is an equidigital number, since it uses as much as digits as its factorization.

1326161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 1326161 is about 1151.5906390728. The cubic root of 1326161 is about 109.8665323384.

The spelling of 1326161 in words is "one million, three hundred twenty-six thousand, one hundred sixty-one".