503344121 has 24 divisors (see below), whose sum is σ = 618456384. Its totient is φ = 407631840.

The previous prime is 503344099. The next prime is 503344139. The reversal of 503344121 is 121443305.

It is a de Polignac number, because none of the positive numbers 2^k-503344121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (503344321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90851 + ... + 96231.

It is an arithmetic number, because the mean of its divisors is an integer number (25769016).

Almost surely, 2^503344121 is an apocalyptic number.

It is an amenable number.

503344121 is a deficient number, since it is larger than the sum of its proper divisors (115112263).

503344121 is a wasteful number, since it uses less digits than its factorization.

503344121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501 (or 5494 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 503344121 is about 22435.3319788230. The cubic root of 503344121 is about 795.4660827224.

Adding to 503344121 its reverse (121443305), we get a palindrome (624787426).

The spelling of 503344121 in words is "five hundred three million, three hundred forty-four thousand, one hundred twenty-one".