5173
5173 is a natural number that comes after 5172 and before 5174. In mathematics, it is an odd composite number with prime factorization 7 × 739, and since 739 is prime, 5173 is square-free. The digit sum is 16, so the number is not divisible by 3; it ends with 3, so it is not divisible by 5. It is divisible by 7, as indicated by its factorization, which means 5173 ≡ 0 (mod 7). The Euler totient function value is φ(5173) = φ(7)φ(739) = 6 × 738 = 4428.
As with many integers, 5173 can appear in a variety of practical contexts beyond pure arithmetic, such