15530

15530 is a number that falls between 15529 and 15531 in the sequence of natural numbers. It is an even number, as it is divisible by 2 without leaving a remainder. In base 10, it is written as "fifteen thousand, five hundred and thirty" in English.

In mathematics, 15530 is a composite number, meaning it has factors other than 1 and itself. Its prime factorization is 2 x 5 x 1553. This means that 15530 can be expressed as the product of these prime numbers.

The number 15530 is also a Harshad number, also known as a Niven number. This is a number that is divisible by the sum of its digits. In this case, the sum of the digits of 15530 is 14, and 15530 is divisible by 14.

In the context of postal codes, 15530 is used in the United States as a ZIP code. This code represents a specific area in the city of Pittsburgh, Pennsylvania. ZIP codes are used by the United States Postal Service to sort and deliver mail efficiently.

In summary, 15530 is an even, composite number with specific mathematical properties. It is also a ZIP code used in the United States for mail sorting and delivery.