503216656 has 20 divisors (see below), whose sum is σ = 976477804. Its totient is φ = 251222400.

The previous prime is 503216647. The next prime is 503216663. The reversal of 503216656 is 656612305.

It can be written as a sum of positive squares in 2 ways, for example, as 383533056 + 119683600 = 19584^2 + 10940^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13215 + ... + 34366.

Almost surely, 2^503216656 is an apocalyptic number.

It is an amenable number.

503216656 is a deficient number, since it is larger than the sum of its proper divisors (473261148).

503216656 is a wasteful number, since it uses less digits than its factorization.

503216656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48250 (or 48244 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 503216656 is about 22432.4910787902. The cubic root of 503216656 is about 795.3989300925.

The spelling of 503216656 in words is "five hundred three million, two hundred sixteen thousand, six hundred fifty-six".