47216171 has 4 divisors (see below), whose sum is σ = 49269072. Its totient is φ = 45163272.

The previous prime is 47216161. The next prime is 47216177. The reversal of 47216171 is 17161274.

47216171 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47216171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47216177) 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, 1026416 + ... + 1026461.

It is an arithmetic number, because the mean of its divisors is an integer number (12317268).

Almost surely, 2^47216171 is an apocalyptic number.

47216171 is a deficient number, since it is larger than the sum of its proper divisors (2052901).

47216171 is a wasteful number, since it uses less digits than its factorization.

47216171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052900.

The product of its digits is 2352, while the sum is 29.

The square root of 47216171 is about 6871.4024041676. The cubic root of 47216171 is about 361.4350410354.

The spelling of 47216171 in words is "forty-seven million, two hundred sixteen thousand, one hundred seventy-one".