80161 has 4 divisors (see below), whose sum is σ = 84400. Its totient is φ = 75924.

The previous prime is 80153. The next prime is 80167. The reversal of 80161 is 16108.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 80161 - 2³ = 80153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2091 + ... + 2128.

It is an arithmetic number, because the mean of its divisors is an integer number (21100).

2⁸⁰¹⁶¹ is an apocalyptic number.

It is an amenable number.

80161 is a deficient number, since it is larger than the sum of its proper divisors (4239).

80161 is a wasteful number, since it uses less digits than its factorization.

80161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 80161 is about 283.1271799033. The cubic root of 80161 is about 43.1175797637.

Adding to 80161 its reverse (16108), we get a palindrome (96269).

It can be divided in two parts, 80 and 161, that multiplied together give a triangular number (12880 = T₁₆₀).

The spelling of 80161 in words is "eighty thousand, one hundred sixty-one".