80517 has 4 divisors (see below), whose sum is σ = 107360. Its totient is φ = 53676.

The previous prime is 80513. The next prime is 80527. The reversal of 80517 is 71508.

It is a happy number.

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 80517 - 2² = 80513 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 80493 and 80502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13417 + ... + 13422.

It is an arithmetic number, because the mean of its divisors is an integer number (26840).

2⁸⁰⁵¹⁷ is an apocalyptic number.

It is an amenable number.

80517 is a deficient number, since it is larger than the sum of its proper divisors (26843).

80517 is a wasteful number, since it uses less digits than its factorization.

80517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26842.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 80517 is about 283.7551761642. The cubic root of 80517 is about 43.1813147931.

Subtracting from 80517 its reverse (71508), we obtain a palindrome (9009).

The spelling of 80517 in words is "eighty thousand, five hundred seventeen".