47018171 has 4 divisors (see below), whose sum is σ = 47127192. Its totient is φ = 46909152.

The previous prime is 47018149. The next prime is 47018183. The reversal of 47018171 is 17181074.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17181074 = 2 ⋅8590537.

It is a cyclic number.

It is not a de Polignac number, because 47018171 - 2¹⁰ = 47017147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47012171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53861 + ... + 54726.

It is an arithmetic number, because the mean of its divisors is an integer number (11781798).

Almost surely, 2^47018171 is an apocalyptic number.

47018171 is a deficient number, since it is larger than the sum of its proper divisors (109021).

47018171 is a wasteful number, since it uses less digits than its factorization.

47018171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109020.

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 47018171 is about 6856.9797287144. The cubic root of 47018171 is about 360.9291098079.

The spelling of 47018171 in words is "forty-seven million, eighteen thousand, one hundred seventy-one".