526

526 is a natural number that comes after 525 and before 527. It is an even and composite number.

Its prime factorization is 526 = 2 × 263, with 263 being prime. Because it is the product of two distinct primes, 526 is squarefree and has exactly four divisors: 1, 2, 263, and 526. The sum of its proper divisors is 266, which is less than 526, so 526 is a deficient number.

In various numeral systems, 526 is represented as follows: in binary it is 1000001110, in octal it is 1016, and in hexadecimal it is 0x20E. In Roman numerals, 526 is written as DXXVI.

As a specific integer, 526 serves as a simple example in number theory to illustrate properties of even, composite, and squarefree numbers, as well as basic divisor sums and base representations. Beyond these mathematical characteristics, 526 may appear in varied real-world contexts such as catalog numbers, identifiers, or page numbers, but such uses are not inherent to the number itself.