510650681 has 2 divisors, whose sum is σ = 510650682. Its totient is φ = 510650680.

The previous prime is 510650639. The next prime is 510650713. The reversal of 510650681 is 186056015.

It is a happy number.

It is an a-pointer prime, because the next prime (510650713) can be obtained adding 510650681 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282912400 + 227738281 = 16820^2 + 15091^2 .

It is a cyclic number.

It is not a de Polignac number, because 510650681 - 2¹⁴ = 510634297 is a prime.

It is a super-2 number, since 2×510650681² = 521528236011527522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (510670681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255325340 + 255325341.

It is an arithmetic number, because the mean of its divisors is an integer number (255325341).

Almost surely, 2^510650681 is an apocalyptic number.

It is an amenable number.

510650681 is a deficient number, since it is larger than the sum of its proper divisors (1).

510650681 is an equidigital number, since it uses as much as digits as its factorization.

510650681 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 32.

The square root of 510650681 is about 22597.5813086268. The cubic root of 510650681 is about 799.2966114244.

The spelling of 510650681 in words is "five hundred ten million, six hundred fifty thousand, six hundred eighty-one".