516040691 has 2 divisors, whose sum is σ = 516040692. Its totient is φ = 516040690.

The previous prime is 516040669. The next prime is 516040753. The reversal of 516040691 is 196040615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 516040691 - 2¹⁸ = 515778547 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (516040621) 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, 258020345 + 258020346.

It is an arithmetic number, because the mean of its divisors is an integer number (258020346).

Almost surely, 2^516040691 is an apocalyptic number.

516040691 is a deficient number, since it is larger than the sum of its proper divisors (1).

516040691 is an equidigital number, since it uses as much as digits as its factorization.

516040691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 516040691 is about 22716.5290262399. The cubic root of 516040691 is about 802.0990144189.

The spelling of 516040691 in words is "five hundred sixteen million, forty thousand, six hundred ninety-one".