516530009 has 2 divisors, whose sum is σ = 516530010. Its totient is φ = 516530008.

The previous prime is 516529939. The next prime is 516530033. The reversal of 516530009 is 900035615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 275659609 + 240870400 = 16603^2 + 15520^2 .

It is a cyclic number.

It is not a de Polignac number, because 516530009 - 2²⁰ = 515481433 is a prime.

It is not a weakly prime, because it can be changed into another prime (516530039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258265004 + 258265005.

It is an arithmetic number, because the mean of its divisors is an integer number (258265005).

Almost surely, 2^516530009 is an apocalyptic number.

It is an amenable number.

516530009 is a deficient number, since it is larger than the sum of its proper divisors (1).

516530009 is an equidigital number, since it uses as much as digits as its factorization.

516530009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 516530009 is about 22727.2965616239. The cubic root of 516530009 is about 802.3524553493.

The spelling of 516530009 in words is "five hundred sixteen million, five hundred thirty thousand, nine".