502216643 has 2 divisors, whose sum is σ = 502216644. Its totient is φ = 502216642.

The previous prime is 502216639. The next prime is 502216691. The reversal of 502216643 is 346612205.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 502216643 - 2² = 502216639 is a prime.

It is not a weakly prime, because it can be changed into another prime (502216343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251108321 + 251108322.

It is an arithmetic number, because the mean of its divisors is an integer number (251108322).

Almost surely, 2^502216643 is an apocalyptic number.

502216643 is a deficient number, since it is larger than the sum of its proper divisors (1).

502216643 is an equidigital number, since it uses as much as digits as its factorization.

502216643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 502216643 is about 22410.1906060613. The cubic root of 502216643 is about 794.8716974494.

Adding to 502216643 its reverse (346612205), we get a palindrome (848828848).

The spelling of 502216643 in words is "five hundred two million, two hundred sixteen thousand, six hundred forty-three".