5181

5181 is a natural number that comes after 5180 and before 5182. In mathematics it is an odd composite number with prime factorization 3 × 11 × 157, which means it is divisible by 3, 11, 33, 157, 471, and 1727, in addition to 1 and itself. The sum of its digits is 15, so the number is divisible by 3 but not by 9. It lies between the squares of 71 and 72 (5041 and 5184), being just three less than 72^2.

In various base representations, 5181 appears as follows: in binary it is 1010000111101, in octal it is 12075, and in hexadecimal it is 0x143D. These representations reflect its factorization and digit structure in different numeral systems.

From a modular arithmetic perspective, 5181 has several notable residues: for example, it is congruent to 1 modulo 7 (since 5181 divided by 7 leaves a remainder of 1) and congruent to 6 modulo 9 (since the digit sum is 15).

As a four-digit decimal number, 5181 does not form a palindrome and does not carry any widely recognized symbolic significance beyond its role as a composite integer with the prime factors 3, 11, and 157. It serves as an example of a non-prime integer with multiple small prime factors and typical base-representation variations.