505223165 has 8 divisors (see below), whose sum is σ = 606735360. Its totient is φ = 403866832.

The previous prime is 505223141. The next prime is 505223171. The reversal of 505223165 is 561322505.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 505223165 - 2¹⁴ = 505206781 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31709 + ... + 44898.

It is an arithmetic number, because the mean of its divisors is an integer number (75841920).

Almost surely, 2^505223165 is an apocalyptic number.

It is an amenable number.

505223165 is a deficient number, since it is larger than the sum of its proper divisors (101512195).

505223165 is a wasteful number, since it uses less digits than its factorization.

505223165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77931.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 505223165 is about 22477.1698618843. The cubic root of 505223165 is about 796.4547102975.

The spelling of 505223165 in words is "five hundred five million, two hundred twenty-three thousand, one hundred sixty-five".