503816 has 16 divisors (see below), whose sum is σ = 959040. Its totient is φ = 248080.

The previous prime is 503803. The next prime is 503819. The reversal of 503816 is 618305.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 503791 and 503800.

It is not an unprimeable number, because it can be changed into a prime (503819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125 + ... + 1011.

It is an arithmetic number, because the mean of its divisors is an integer number (59940).

2⁵⁰³⁸¹⁶ is an apocalyptic number.

It is an amenable number.

503816 is a deficient number, since it is larger than the sum of its proper divisors (455224).

503816 is a wasteful number, since it uses less digits than its factorization.

503816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 503816 is about 709.7999718230. The cubic root of 503816 is about 79.5714585013.

It can be divided in two parts, 5038 and 16, that multiplied together give a palindrome (80608).

The spelling of 503816 in words is "five hundred three thousand, eight hundred sixteen".