79517 has 4 divisors (see below), whose sum is σ = 80256. Its totient is φ = 78780.

The previous prime is 79493. The next prime is 79531. The reversal of 79517 is 71597.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79517 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 79517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79537) 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, 173 + ... + 434.

It is an arithmetic number, because the mean of its divisors is an integer number (20064).

2⁷⁹⁵¹⁷ is an apocalyptic number.

It is an amenable number.

79517 is a deficient number, since it is larger than the sum of its proper divisors (739).

79517 is a wasteful number, since it uses less digits than its factorization.

79517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738.

The product of its digits is 2205, while the sum is 29.

The square root of 79517 is about 281.9875883793. The cubic root of 79517 is about 43.0018027007.

The spelling of 79517 in words is "seventy-nine thousand, five hundred seventeen".