520002563 has 2 divisors, whose sum is σ = 520002564. Its totient is φ = 520002562.

The previous prime is 520002541. The next prime is 520002589. The reversal of 520002563 is 365200025.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520002563 - 2⁶ = 520002499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520002503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260001281 + 260001282.

It is an arithmetic number, because the mean of its divisors is an integer number (260001282).

Almost surely, 2^520002563 is an apocalyptic number.

520002563 is a deficient number, since it is larger than the sum of its proper divisors (1).

520002563 is an equidigital number, since it uses as much as digits as its factorization.

520002563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 520002563 is about 22803.5646994061. The cubic root of 520002563 is about 804.1464728849.

Adding to 520002563 its reverse (365200025), we get a palindrome (885202588).

The spelling of 520002563 in words is "five hundred twenty million, two thousand, five hundred sixty-three".