516509219 has 2 divisors, whose sum is σ = 516509220. Its totient is φ = 516509218.

The previous prime is 516509209. The next prime is 516509263. The reversal of 516509219 is 912905615.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516509219 is a prime.

It is a super-2 number, since 2×516509219² = 533563546623979922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (516509209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258254609 + 258254610.

It is an arithmetic number, because the mean of its divisors is an integer number (258254610).

Almost surely, 2^516509219 is an apocalyptic number.

516509219 is a deficient number, since it is larger than the sum of its proper divisors (1).

516509219 is an equidigital number, since it uses as much as digits as its factorization.

516509219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 516509219 is about 22726.8391775011. The cubic root of 516509219 is about 802.3416904817.

The spelling of 516509219 in words is "five hundred sixteen million, five hundred nine thousand, two hundred nineteen".