511673761 has 2 divisors, whose sum is σ = 511673762. Its totient is φ = 511673760.

The previous prime is 511673759. The next prime is 511673843. The reversal of 511673761 is 167376115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355548736 + 156125025 = 18856^2 + 12495^2 .

It is a cyclic number.

It is not a de Polignac number, because 511673761 - 2¹ = 511673759 is a prime.

Together with 511673759, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 511673761.

It is not a weakly prime, because it can be changed into another prime (511673731) 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, 255836880 + 255836881.

It is an arithmetic number, because the mean of its divisors is an integer number (255836881).

Almost surely, 2^511673761 is an apocalyptic number.

It is an amenable number.

511673761 is a deficient number, since it is larger than the sum of its proper divisors (1).

511673761 is an equidigital number, since it uses as much as digits as its factorization.

511673761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 37.

The square root of 511673761 is about 22620.2069177097. The cubic root of 511673761 is about 799.8300477520.

The spelling of 511673761 in words is "five hundred eleven million, six hundred seventy-three thousand, seven hundred sixty-one".