503045321 has 8 divisors (see below), whose sum is σ = 510209280. Its totient is φ = 495907792.

The previous prime is 503045293. The next prime is 503045327. The reversal of 503045321 is 123540305.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503045321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503045327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33431 + ... + 46083.

It is an arithmetic number, because the mean of its divisors is an integer number (63776160).

Almost surely, 2^503045321 is an apocalyptic number.

It is an amenable number.

503045321 is a deficient number, since it is larger than the sum of its proper divisors (7163959).

503045321 is a wasteful number, since it uses less digits than its factorization.

503045321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13215.

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

The square root of 503045321 is about 22428.6718510036. The cubic root of 503045321 is about 795.3086474785.

Adding to 503045321 its reverse (123540305), we get a palindrome (626585626).

The spelling of 503045321 in words is "five hundred three million, forty-five thousand, three hundred twenty-one".