13561

13561 is a four-digit number. It is an odd number, as its last digit is 1. The sum of its digits is 1 + 3 + 5 + 6 + 1 = 16. In terms of prime factorization, 13561 is a prime number. It cannot be evenly divided by any whole number other than 1 and itself. This makes it a fundamental building block in number theory, similar to other prime numbers. Its position in the sequence of prime numbers is 1630th.

The number 13561 does not have any immediately obvious or widely recognized mathematical properties that distinguish it beyond its primality. It is not a perfect square, a perfect cube, or a Fibonacci number. Its significance, if any, would likely be within a specific mathematical context or problem where it arises as a solution or a parameter. Without further context, 13561 remains a prime integer.