516005609 has 4 divisors (see below), whose sum is σ = 589720704. Its totient is φ = 442290516.

The previous prime is 516005593. The next prime is 516005653. The reversal of 516005609 is 906500615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 906500615 = 5 ⋅181300123.

It is a cyclic number.

It is not a de Polignac number, because 516005609 - 2⁴ = 516005593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516005689) 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 in 3 ways as a sum of consecutive naturals, for example, 36857537 + ... + 36857550.

It is an arithmetic number, because the mean of its divisors is an integer number (147430176).

Almost surely, 2^516005609 is an apocalyptic number.

It is an amenable number.

516005609 is a deficient number, since it is larger than the sum of its proper divisors (73715095).

516005609 is an equidigital number, since it uses as much as digits as its factorization.

516005609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73715094.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 516005609 is about 22715.7568440939. The cubic root of 516005609 is about 802.0808376383.

The spelling of 516005609 in words is "five hundred sixteen million, five thousand, six hundred nine".