216255

216255 is a natural number within the decimal system. It sits between 216254 and 216256 and, like many six-digit integers, can be encountered in various contexts as a numeric value, identifier, or example in explanations of arithmetic.

In mathematics, 216255 factors as 3 × 5 × 13 × 1109. All prime factors are distinct, so the number is square-free and has exactly 2^4 = 16 positive divisors. It is divisible by 3 and by 5, and therefore by 15. The digit sum is 21, which means the number is congruent to 3 modulo 9. It is not a prime, nor a prime power, and its factorization makes it a useful example of a product of multiple distinct primes in elementary number theory.

Other notable properties include its parity and modular behavior: as an odd number, it is not divisible by 2, and its residue modulo small primes can be determined from its prime factorization. Its six-digit representation does not imply any standard mathematical constant or widely recognized classification beyond its arithmetic structure.

In practice, six-digit numbers like 216255 often appear as identifiers in datasets, inventory systems, serial numbers, or catalog codes. There is no widely recognized object or concept uniquely associated with 216255 in mathematics or science. Any specific significance would depend on the domain or dataset where the number is used.

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