506171617 has 20 divisors (see below), whose sum is σ = 625284036. Its totient is φ = 408307200.

The previous prime is 506171593. The next prime is 506171629. The reversal of 506171617 is 716171605.

It can be written as a sum of positive squares in 2 ways, for example, as 295805601 + 210366016 = 17199^2 + 14504^2 .

It is a de Polignac number, because none of the positive numbers 2^k-506171617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506171417) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34617 + ... + 47017.

Almost surely, 2^506171617 is an apocalyptic number.

It is an amenable number.

506171617 is a deficient number, since it is larger than the sum of its proper divisors (119112419).

506171617 is an equidigital number, since it uses as much as digits as its factorization.

506171617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12446 (or 12425 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 506171617 is about 22498.2580881276. The cubic root of 506171617 is about 796.9527917433.

The spelling of 506171617 in words is "five hundred six million, one hundred seventy-one thousand, six hundred seventeen".