5787

5787 is a natural number. It follows 5786 and precedes 5788. In mathematics, it is an odd composite number with a simple factor structure rather than a prime.

Its prime factorization is 3^2 × 643, where 643 is a prime number. The digit sum is 27, so 5787 is divisible by 9, with 5787 = 9 × 643. The digital root is 9, and the number is not divisible by 2 or 5.

In different base systems, 5787 has several common representations. In binary it is 1011010011011_2, in hexadecimal it is 0x169B, and in octal it is 13233_8. In Roman numerals, using a bar over the symbol for 5,000 to indicate multiples of that value, it can be written as V̄DCCLXXXVII.

In the Hebrew calendar, the year 5787 corresponds roughly to the period from autumn 2026 to autumn 2027 CE. Year numbers in that calendar run ahead of the Gregorian system by about 5,700 years, reflecting a different chronological counting method used in Jewish tradition.

As a natural number, 5787 participates in standard arithmetic and number theory. It does not have any widely noted mathematical constants uniquely tied to it, but it appears in general lists and datasets involving integer sequences, modular arithmetic, and numeral system conversions.