505223163 has 20 divisors (see below), whose sum is σ = 770779680. Its totient is φ = 329646672.

The previous prime is 505223141. The next prime is 505223171. The reversal of 505223163 is 361322505.

505223163 is a `hidden beast` number, since 50 + 522 + 31 + 63 = 666.

It is not a de Polignac number, because 505223163 - 2²¹ = 503126011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (505223183) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 62548 + ... + 70161.

It is an arithmetic number, because the mean of its divisors is an integer number (38538984).

Almost surely, 2^505223163 is an apocalyptic number.

505223163 is a deficient number, since it is larger than the sum of its proper divisors (265556517).

505223163 is a wasteful number, since it uses less digits than its factorization.

505223163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132768 (or 132759 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 505223163 is about 22477.1698173947. The cubic root of 505223163 is about 796.4547092466.

Adding to 505223163 its reverse (361322505), we get a palindrome (866545668).

The spelling of 505223163 in words is "five hundred five million, two hundred twenty-three thousand, one hundred sixty-three".