543503 has 2 divisors, whose sum is σ = 543504. Its totient is φ = 543502.

The previous prime is 543497. The next prime is 543509. The reversal of 543503 is 305345.

It is a balanced prime because it is at equal distance from previous prime (543497) and next prime (543509).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543503 is a prime.

It is a super-2 number, since 2×543503² = 590791022018, which contains 22 as substring.

It is equal to p₄₄₈₄₀ and since 543503 and 44840 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (543509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271751 + 271752.

It is an arithmetic number, because the mean of its divisors is an integer number (271752).

2⁵⁴³⁵⁰³ is an apocalyptic number.

543503 is a deficient number, since it is larger than the sum of its proper divisors (1).

543503 is an equidigital number, since it uses as much as digits as its factorization.

543503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 543503 is about 737.2265594782. The cubic root of 543503 is about 81.6082343830.

Adding to 543503 its reverse (305345), we get a palindrome (848848).

The spelling of 543503 in words is "five hundred forty-three thousand, five hundred three".