516074309 has 2 divisors, whose sum is σ = 516074310. Its totient is φ = 516074308.

The previous prime is 516074201. The next prime is 516074311. The reversal of 516074309 is 903470615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259113409 + 256960900 = 16097^2 + 16030^2 .

It is a cyclic number.

It is not a de Polignac number, because 516074309 - 2¹² = 516070213 is a prime.

It is a Sophie Germain prime.

Together with 516074311, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is equal to p_27156635 and since 516074309 and 27156635 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516074509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258037154 + 258037155.

It is an arithmetic number, because the mean of its divisors is an integer number (258037155).

Almost surely, 2^516074309 is an apocalyptic number.

It is an amenable number.

516074309 is a deficient number, since it is larger than the sum of its proper divisors (1).

516074309 is an equidigital number, since it uses as much as digits as its factorization.

516074309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 516074309 is about 22717.2689599784. The cubic root of 516074309 is about 802.1164318950.

The spelling of 516074309 in words is "five hundred sixteen million, seventy-four thousand, three hundred nine".