506618172 has 48 divisors (see below), whose sum is σ = 1317316000. Its totient is φ = 168376320.

The previous prime is 506618129. The next prime is 506618179. The reversal of 506618172 is 271816605.

506618172 is a `hidden beast` number, since 506 + 6 + 1 + 81 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506618179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30972 + ... + 44412.

Almost surely, 2^506618172 is an apocalyptic number.

It is an amenable number.

506618172 is an abundant number, since it is smaller than the sum of its proper divisors (810697828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

506618172 is a wasteful number, since it uses less digits than its factorization.

506618172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13803 (or 13795 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 506618172 is about 22508.1801130167. The cubic root of 506618172 is about 797.1870855661.

The spelling of 506618172 in words is "five hundred six million, six hundred eighteen thousand, one hundred seventy-two".