4521

4521 is a positive integer that follows 4520 and precedes 4522. It is odd and composite. Its prime factorization is 3 × 11 × 137, making it a squarefree number with eight positive divisors: 1, 3, 11, 33, 137, 411, 1507, and 4521.

The divisors and factorization imply certain arithmetic properties. The sum of all divisors is 6624, so the sum of proper divisors is 2103, meaning 4521 is a deficient number. The Euler totient phi(4521) equals 2720, reflecting the count of integers up to 4521 that are relatively prime to it.

In base representations, 4521 equals 0b1000110101001 in binary, 0x11A9 in hexadecimal, and 10651 in octal.

In mathematical discussions, 4521 often serves as an example of a small, squarefree, composite integer with three distinct prime factors. It highlights typical divisor-function values and base-conversion representations without being large enough to obscure the underlying structure.