503324161 has 2 divisors, whose sum is σ = 503324162. Its totient is φ = 503324160.

The previous prime is 503324147. The next prime is 503324179. The reversal of 503324161 is 161423305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468289600 + 35034561 = 21640^2 + 5919^2 .

It is a cyclic number.

It is not a de Polignac number, because 503324161 - 2¹⁹ = 502799873 is a prime.

It is a super-2 number, since 2×503324161² = 506670422092707842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (503324191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251662080 + 251662081.

It is an arithmetic number, because the mean of its divisors is an integer number (251662081).

Almost surely, 2^503324161 is an apocalyptic number.

It is an amenable number.

503324161 is a deficient number, since it is larger than the sum of its proper divisors (1).

503324161 is an equidigital number, since it uses as much as digits as its factorization.

503324161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 503324161 is about 22434.8871403446. The cubic root of 503324161 is about 795.4555679061.

Adding to 503324161 its reverse (161423305), we get a palindrome (664747466).

The spelling of 503324161 in words is "five hundred three million, three hundred twenty-four thousand, one hundred sixty-one".