501863 has 2 divisors, whose sum is σ = 501864. Its totient is φ = 501862.

The previous prime is 501841. The next prime is 501889. The reversal of 501863 is 368105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 501863 - 2¹⁰ = 500839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250931 + 250932.

It is an arithmetic number, because the mean of its divisors is an integer number (250932).

2⁵⁰¹⁸⁶³ is an apocalyptic number.

501863 is a deficient number, since it is larger than the sum of its proper divisors (1).

501863 is an equidigital number, since it uses as much as digits as its factorization.

501863 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 23.

The square root of 501863 is about 708.4228962985. The cubic root of 501863 is about 79.4685080232.

Adding to 501863 its reverse (368105), we get a palindrome (869968).

The spelling of 501863 in words is "five hundred one thousand, eight hundred sixty-three".