80917 has 2 divisors, whose sum is σ = 80918. Its totient is φ = 80916.

The previous prime is 80911. The next prime is 80923. The reversal of 80917 is 71908.

It is a balanced prime because it is at equal distance from previous prime (80911) and next prime (80923).

It can be written as a sum of positive squares in only one way, i.e., 53361 + 27556 = 231^2 + 166^2 .

It is a cyclic number.

It is not a de Polignac number, because 80917 - 2³ = 80909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80891 and 80900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40458 + 40459.

It is an arithmetic number, because the mean of its divisors is an integer number (40459).

2⁸⁰⁹¹⁷ is an apocalyptic number.

It is an amenable number.

80917 is a deficient number, since it is larger than the sum of its proper divisors (1).

80917 is an equidigital number, since it uses as much as digits as its factorization.

80917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 80917 is about 284.4591359053. The cubic root of 80917 is about 43.2527034518.

Subtracting from 80917 its reverse (71908), we obtain a palindrome (9009).

The spelling of 80917 in words is "eighty thousand, nine hundred seventeen".