827161 has 2 divisors, whose sum is σ = 827162. Its totient is φ = 827160.

The previous prime is 827147. The next prime is 827213. The reversal of 827161 is 161728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 17161 = 900^2 + 131^2 .

It is a cyclic number.

It is not a de Polignac number, because 827161 - 2⁵ = 827129 is a prime.

It is not a weakly prime, because it can be changed into another prime (827131) 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, 413580 + 413581.

It is an arithmetic number, because the mean of its divisors is an integer number (413581).

2⁸²⁷¹⁶¹ is an apocalyptic number.

It is an amenable number.

827161 is a deficient number, since it is larger than the sum of its proper divisors (1).

827161 is an equidigital number, since it uses as much as digits as its factorization.

827161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 25.

The square root of 827161 is about 909.4839195940. The cubic root of 827161 is about 93.8706913731.

Adding to 827161 its reverse (161728), we get a palindrome (988889).

The spelling of 827161 in words is "eight hundred twenty-seven thousand, one hundred sixty-one".