503504423 has 2 divisors, whose sum is σ = 503504424. Its totient is φ = 503504422.

The previous prime is 503504413. The next prime is 503504437. The reversal of 503504423 is 324405305.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503504423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 503504392 and 503504401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503504413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251752211 + 251752212.

It is an arithmetic number, because the mean of its divisors is an integer number (251752212).

Almost surely, 2^503504423 is an apocalyptic number.

503504423 is a deficient number, since it is larger than the sum of its proper divisors (1).

503504423 is an equidigital number, since it uses as much as digits as its factorization.

503504423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 503504423 is about 22438.9042290393. The cubic root of 503504423 is about 795.5505188396.

Adding to 503504423 its reverse (324405305), we get a palindrome (827909728).

The spelling of 503504423 in words is "five hundred three million, five hundred four thousand, four hundred twenty-three".