173545

173545 is a natural number in the decimal system. It immediately follows 173544 and precedes 173546. The value is odd and ends with the digit 5, indicating divisibility by 5.

Prime factorization: 173545 = 5 × 61 × 569. All three factors are prime, so the number is square-free and has eight divisors in total.

Digit and magnitude properties: the sum of its digits is 1 + 7 + 3 + 5 + 4 + 5 = 25, so it is not divisible by 3. The number is approximately 1.73545 × 10^5 in scientific notation.

Arithmetic classification: the sum of the proper divisors of 173545 equals 38,495, which is less than 173,545. Therefore, 173545 is a deficient number (not perfect or abundant).

Usage and context: as a year or catalog number, 173545 may appear in databases or sequences, but in pure mathematics it is noted for its factorization into three distinct primes and its status as a square-free, deficient composite number.