47790171 has 48 divisors (see below), whose sum is σ = 82397952. Its totient is φ = 26308800.

The previous prime is 47790163. The next prime is 47790191. The reversal of 47790171 is 17109774.

It is not a de Polignac number, because 47790171 - 2³ = 47790163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47790101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91116 + ... + 91638.

It is an arithmetic number, because the mean of its divisors is an integer number (1716624).

Almost surely, 2^47790171 is an apocalyptic number.

47790171 is a deficient number, since it is larger than the sum of its proper divisors (34607781).

47790171 is a wasteful number, since it uses less digits than its factorization.

47790171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 36.

The square root of 47790171 is about 6913.0435410172. The cubic root of 47790171 is about 362.8937830979.

It can be divided in two parts, 47790 and 171, that added together give a square (47961 = 219²).

The spelling of 47790171 in words is "forty-seven million, seven hundred ninety thousand, one hundred seventy-one".