510730729 has 2 divisors, whose sum is σ = 510730730. Its totient is φ = 510730728.

The previous prime is 510730667. The next prime is 510730739. The reversal of 510730729 is 927037015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 457104400 + 53626329 = 21380^2 + 7323^2 .

It is a cyclic number.

It is not a de Polignac number, because 510730729 - 2⁷ = 510730601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 510730694 and 510730703.

It is not a weakly prime, because it can be changed into another prime (510730739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255365364 + 255365365.

It is an arithmetic number, because the mean of its divisors is an integer number (255365365).

Almost surely, 2^510730729 is an apocalyptic number.

It is an amenable number.

510730729 is a deficient number, since it is larger than the sum of its proper divisors (1).

510730729 is an equidigital number, since it uses as much as digits as its factorization.

510730729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 510730729 is about 22599.3524022260. The cubic root of 510730729 is about 799.3383743193.

The spelling of 510730729 in words is "five hundred ten million, seven hundred thirty thousand, seven hundred twenty-nine".