516506505 has 8 divisors (see below), whose sum is σ = 826410432. Its totient is φ = 275470128.

The previous prime is 516506483. The next prime is 516506509. The reversal of 516506505 is 505605615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 516506505 - 2⁹ = 516505993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (516506509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17216869 + ... + 17216898.

It is an arithmetic number, because the mean of its divisors is an integer number (103301304).

Almost surely, 2^516506505 is an apocalyptic number.

It is an amenable number.

516506505 is a deficient number, since it is larger than the sum of its proper divisors (309903927).

516506505 is a wasteful number, since it uses less digits than its factorization.

516506505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34433775.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 516506505 is about 22726.7794682837. The cubic root of 516506505 is about 802.3402851766.

The spelling of 516506505 in words is "five hundred sixteen million, five hundred six thousand, five hundred five".