503305512 has 16 divisors (see below), whose sum is σ = 1258263840. Its totient is φ = 167768496.

The previous prime is 503305501. The next prime is 503305513. The reversal of 503305512 is 215503305.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 20971063 = 503305512 / (5 + 0 + 3 + 3 + 0 + 5 + 5 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (503305513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10485508 + ... + 10485555.

It is an arithmetic number, because the mean of its divisors is an integer number (78641490).

Almost surely, 2^503305512 is an apocalyptic number.

It is an amenable number.

503305512 is an abundant number, since it is smaller than the sum of its proper divisors (754958328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

503305512 is a wasteful number, since it uses less digits than its factorization.

503305512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20971072 (or 20971068 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 503305512 is about 22434.4715114932. The cubic root of 503305512 is about 795.4457434660.

Adding to 503305512 its reverse (215503305), we get a palindrome (718808817).

The spelling of 503305512 in words is "five hundred three million, three hundred five thousand, five hundred twelve".