503404516523 has 2 divisors, whose sum is σ = 503404516524. Its totient is φ = 503404516522.

The previous prime is 503404516457. The next prime is 503404516543. The reversal of 503404516523 is 325615404305.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 503404516523 - 2¹⁰ = 503404515499 is a prime.

It is a super-2 number, since 2×503404516523² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (503404516543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251702258261 + 251702258262.

It is an arithmetic number, because the mean of its divisors is an integer number (251702258262).

Almost surely, 2^503404516523 is an apocalyptic number.

503404516523 is a deficient number, since it is larger than the sum of its proper divisors (1).

503404516523 is an equidigital number, since it uses as much as digits as its factorization.

503404516523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 503404516523 in words is "five hundred three billion, four hundred four million, five hundred sixteen thousand, five hundred twenty-three".