505313163 has 12 divisors (see below), whose sum is σ = 730097368. Its totient is φ = 336782880.

The previous prime is 505313161. The next prime is 505313191. The reversal of 505313163 is 361313505.

It is not a de Polignac number, because 505313163 - 2¹ = 505313161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505313161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48156 + ... + 57702.

Almost surely, 2^505313163 is an apocalyptic number.

505313163 is a deficient number, since it is larger than the sum of its proper divisors (224784205).

505313163 is a wasteful number, since it uses less digits than its factorization.

505313163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15434 (or 15431 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 505313163 is about 22479.1717596534. The cubic root of 505313163 is about 796.5019996805.

Adding to 505313163 its reverse (361313505), we get a palindrome (866626668).

The spelling of 505313163 in words is "five hundred five million, three hundred thirteen thousand, one hundred sixty-three".