503503963 has 2 divisors, whose sum is σ = 503503964. Its totient is φ = 503503962.

The previous prime is 503503961. The next prime is 503503969. The reversal of 503503963 is 369305305.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 503503963 - 2¹ = 503503961 is a prime.

Together with 503503961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (503503961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251751981 + 251751982.

It is an arithmetic number, because the mean of its divisors is an integer number (251751982).

Almost surely, 2^503503963 is an apocalyptic number.

503503963 is a deficient number, since it is larger than the sum of its proper divisors (1).

503503963 is an equidigital number, since it uses as much as digits as its factorization.

503503963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 34.

The square root of 503503963 is about 22438.8939789821. The cubic root of 503503963 is about 795.5502765688.

The spelling of 503503963 in words is "five hundred three million, five hundred three thousand, nine hundred sixty-three".