502643 has 2 divisors, whose sum is σ = 502644. Its totient is φ = 502642.

The previous prime is 502633. The next prime is 502651. The reversal of 502643 is 346205.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-502643 is a prime.

It is a Sophie Germain prime.

It is equal to p₄₁₇₃₅ and since 502643 and 41735 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (502613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251321 + 251322.

It is an arithmetic number, because the mean of its divisors is an integer number (251322).

2⁵⁰²⁶⁴³ is an apocalyptic number.

502643 is a deficient number, since it is larger than the sum of its proper divisors (1).

502643 is an equidigital number, since it uses as much as digits as its factorization.

502643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 502643 is about 708.9732011861. The cubic root of 502643 is about 79.5096569364.

Adding to 502643 its reverse (346205), we get a palindrome (848848).

The spelling of 502643 in words is "five hundred two thousand, six hundred forty-three".