47272171 has 4 divisors (see below), whose sum is σ = 49760200. Its totient is φ = 44784144.

The previous prime is 47272163. The next prime is 47272201. The reversal of 47272171 is 17127274.

47272171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17127274 = 2 ⋅8563637.

It is a cyclic number.

It is not a de Polignac number, because 47272171 - 2³ = 47272163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47272111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243986 + ... + 1244023.

It is an arithmetic number, because the mean of its divisors is an integer number (12440050).

Almost surely, 2^47272171 is an apocalyptic number.

47272171 is a deficient number, since it is larger than the sum of its proper divisors (2488029).

47272171 is a wasteful number, since it uses less digits than its factorization.

47272171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488028.

The product of its digits is 5488, while the sum is 31.

The square root of 47272171 is about 6875.4760562451. The cubic root of 47272171 is about 361.5778760375.

The spelling of 47272171 in words is "forty-seven million, two hundred seventy-two thousand, one hundred seventy-one".