511830481 has 2 divisors, whose sum is σ = 511830482. Its totient is φ = 511830480.

The previous prime is 511830479. The next prime is 511830497. The reversal of 511830481 is 184038115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 469372225 + 42458256 = 21665^2 + 6516^2 .

It is a cyclic number.

It is not a de Polignac number, because 511830481 - 2¹ = 511830479 is a prime.

It is a super-2 number, since 2×511830481² = 523940882561382722, which contains 22 as substring.

Together with 511830479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (511830461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255915240 + 255915241.

It is an arithmetic number, because the mean of its divisors is an integer number (255915241).

Almost surely, 2^511830481 is an apocalyptic number.

It is an amenable number.

511830481 is a deficient number, since it is larger than the sum of its proper divisors (1).

511830481 is an equidigital number, since it uses as much as digits as its factorization.

511830481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 511830481 is about 22623.6708117847. The cubic root of 511830481 is about 799.9116991082.

Adding to 511830481 its reverse (184038115), we get a palindrome (695868596).

The spelling of 511830481 in words is "five hundred eleven million, eight hundred thirty thousand, four hundred eighty-one".