524

524 is a natural number that comes after 523 and before 525. In mathematics, it is an even composite number with prime factorization 2^2 × 131, yielding six divisors: 1, 2, 4, 131, 262, and 524. The sum of its proper divisors is 400, so 524 is a deficient number. It is not a prime, nor a square, and its base representations include 0x20C in hexadecimal, 1000001100 in binary, and DXXIV in Roman numerals.

In historical terms, the year 524 CE falls in the sixth century and is part of the broader late antique period. It occurred during the reign of Byzantine Emperor Justin I (r. 518–527) and was within a era marked by ongoing frontier conflicts between the Byzantine Empire and the Sassanid Empire, as well as broader political and religious developments of the time.