503004321 has 12 divisors (see below), whose sum is σ = 727206948. Its totient is φ = 335038464.

The previous prime is 503004283. The next prime is 503004343. The reversal of 503004321 is 123400305.

It can be written as a sum of positive squares in 2 ways, for example, as 158382225 + 344622096 = 12585^2 + 18564^2 .

It is not a de Polignac number, because 503004321 - 2⁷ = 503004193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 503004294 and 503004303.

It is not an unprimeable number, because it can be changed into a prime (503004521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13860 + ... + 34613.

It is an arithmetic number, because the mean of its divisors is an integer number (60600579).

Almost surely, 2^503004321 is an apocalyptic number.

It is an amenable number.

503004321 is a deficient number, since it is larger than the sum of its proper divisors (224202627).

503004321 is a wasteful number, since it uses less digits than its factorization.

503004321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49632 (or 49629 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 503004321 is about 22427.7578237326. The cubic root of 503004321 is about 795.2870400546.

Adding to 503004321 its reverse (123400305), we get a palindrome (626404626).

The spelling of 503004321 in words is "five hundred three million, four thousand, three hundred twenty-one".