520306063 has 24 divisors (see below), whose sum is σ = 571388400. Its totient is φ = 473410560.

The previous prime is 520306037. The next prime is 520306079. The reversal of 520306063 is 360603025.

It is a de Polignac number, because none of the positive numbers 2^k-520306063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520306463) 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 in 23 ways as a sum of consecutive naturals, for example, 1851483 + ... + 1851763.

It is an arithmetic number, because the mean of its divisors is an integer number (23807850).

Almost surely, 2^520306063 is an apocalyptic number.

520306063 is a deficient number, since it is larger than the sum of its proper divisors (51082337).

520306063 is a wasteful number, since it uses less digits than its factorization.

520306063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 520306063 is about 22810.2183900111. The cubic root of 520306063 is about 804.3028894141.

Adding to 520306063 its reverse (360603025), we get a palindrome (880909088).

The spelling of 520306063 in words is "five hundred twenty million, three hundred six thousand, sixty-three".