504310561 has 2 divisors, whose sum is σ = 504310562. Its totient is φ = 504310560.

The previous prime is 504310553. The next prime is 504310567. The reversal of 504310561 is 165013405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 480486400 + 23824161 = 21920^2 + 4881^2 .

It is a cyclic number.

It is not a de Polignac number, because 504310561 - 2³ = 504310553 is a prime.

It is a super-2 number, since 2×504310561² = 508658283872269442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (504310567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252155280 + 252155281.

It is an arithmetic number, because the mean of its divisors is an integer number (252155281).

Almost surely, 2^504310561 is an apocalyptic number.

It is an amenable number.

504310561 is a deficient number, since it is larger than the sum of its proper divisors (1).

504310561 is an equidigital number, since it uses as much as digits as its factorization.

504310561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 504310561 is about 22456.8599986730. The cubic root of 504310561 is about 795.9748656870.

Adding to 504310561 its reverse (165013405), we get a palindrome (669323966).

The spelling of 504310561 in words is "five hundred four million, three hundred ten thousand, five hundred sixty-one".