80191 has 2 divisors, whose sum is σ = 80192. Its totient is φ = 80190.

The previous prime is 80177. The next prime is 80207. The reversal of 80191 is 19108.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80191 - 2¹³ = 71999 is a prime.

It is a Chen prime.

It is a plaindrome in base 8.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80111) 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, 40095 + 40096.

It is an arithmetic number, because the mean of its divisors is an integer number (40096).

2⁸⁰¹⁹¹ is an apocalyptic number.

80191 is a deficient number, since it is larger than the sum of its proper divisors (1).

80191 is an equidigital number, since it uses as much as digits as its factorization.

80191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 80191 is about 283.1801546719. The cubic root of 80191 is about 43.1229579653.

Adding to 80191 its reverse (19108), we get a palindrome (99299).

The spelling of 80191 in words is "eighty thousand, one hundred ninety-one".