47487171 has 16 divisors (see below), whose sum is σ = 67392000. Its totient is φ = 29639808.

The previous prime is 47487163. The next prime is 47487173. The reversal of 47487171 is 17178474.

It is not a de Polignac number, because 47487171 - 2³ = 47487163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47487173) 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, 7810 + ... + 12488.

It is an arithmetic number, because the mean of its divisors is an integer number (4212000).

Almost surely, 2^47487171 is an apocalyptic number.

47487171 is a deficient number, since it is larger than the sum of its proper divisors (19904829).

47487171 is a wasteful number, since it uses less digits than its factorization.

47487171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4898.

The product of its digits is 43904, while the sum is 39.

The square root of 47487171 is about 6891.0935997126. The cubic root of 47487171 is about 362.1252148665.

The spelling of 47487171 in words is "forty-seven million, four hundred eighty-seven thousand, one hundred seventy-one".