516506516 has 12 divisors (see below), whose sum is σ = 914043060. Its totient is φ = 255351360.

The previous prime is 516506509. The next prime is 516506533. The reversal of 516506516 is 615605615.

It can be written as a sum of positive squares in 2 ways, for example, as 242736400 + 273770116 = 15580^2 + 16546^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725075 + ... + 725786.

It is an arithmetic number, because the mean of its divisors is an integer number (76170255).

Almost surely, 2^516506516 is an apocalyptic number.

It is an amenable number.

516506516 is a deficient number, since it is larger than the sum of its proper divisors (397536544).

516506516 is a wasteful number, since it uses less digits than its factorization.

516506516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450954 (or 1450952 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 516506516 is about 22726.7797102889. The cubic root of 516506516 is about 802.3402908724.

Subtracting 516506516 from its reverse (615605615), we obtain a palindrome (99099099).

The spelling of 516506516 in words is "five hundred sixteen million, five hundred six thousand, five hundred sixteen".