513206611 has 2 divisors, whose sum is σ = 513206612. Its totient is φ = 513206610.

The previous prime is 513206593. The next prime is 513206621. The reversal of 513206611 is 116602315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513206611 - 2⁷ = 513206483 is a prime.

It is not a weakly prime, because it can be changed into another prime (513206621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256603305 + 256603306.

It is an arithmetic number, because the mean of its divisors is an integer number (256603306).

Almost surely, 2^513206611 is an apocalyptic number.

513206611 is a deficient number, since it is larger than the sum of its proper divisors (1).

513206611 is an equidigital number, since it uses as much as digits as its factorization.

513206611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 513206611 is about 22654.0638959106. The cubic root of 513206611 is about 800.6279501984.

Adding to 513206611 its reverse (116602315), we get a palindrome (629808926).

The spelling of 513206611 in words is "five hundred thirteen million, two hundred six thousand, six hundred eleven".