516223009 has 2 divisors, whose sum is σ = 516223010. Its totient is φ = 516223008.

The previous prime is 516222983. The next prime is 516223049. The reversal of 516223009 is 900322615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479741409 + 36481600 = 21903^2 + 6040^2 .

It is a cyclic number.

It is not a de Polignac number, because 516223009 - 2⁵ = 516222977 is a prime.

It is not a weakly prime, because it can be changed into another prime (516223049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258111504 + 258111505.

It is an arithmetic number, because the mean of its divisors is an integer number (258111505).

Almost surely, 2^516223009 is an apocalyptic number.

It is an amenable number.

516223009 is a deficient number, since it is larger than the sum of its proper divisors (1).

516223009 is an equidigital number, since it uses as much as digits as its factorization.

516223009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 516223009 is about 22720.5415648483. The cubic root of 516223009 is about 802.1934642508.

The spelling of 516223009 in words is "five hundred sixteen million, two hundred twenty-three thousand, nine".