500566505 has 4 divisors (see below), whose sum is σ = 600679812. Its totient is φ = 400453200.

The previous prime is 500566501. The next prime is 500566529. The reversal of 500566505 is 505665005.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 182871529 + 317694976 = 13523^2 + 17824^2 .

It is not a de Polignac number, because 500566505 - 2² = 500566501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (500566501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50056646 + ... + 50056655.

It is an arithmetic number, because the mean of its divisors is an integer number (150169953).

Almost surely, 2^500566505 is an apocalyptic number.

It is an amenable number.

500566505 is a deficient number, since it is larger than the sum of its proper divisors (100113307).

500566505 is a wasteful number, since it uses less digits than its factorization.

500566505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100113306.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 500566505 is about 22373.3436258419. The cubic root of 500566505 is about 794.0001697238. Note that the first 3 decimals are identical.

The spelling of 500566505 in words is "five hundred million, five hundred sixty-six thousand, five hundred five".