47171205 has 24 divisors (see below), whose sum is σ = 86068320. Its totient is φ = 23833440.

The previous prime is 47171177. The next prime is 47171207. The reversal of 47171205 is 50217174.

It is not a de Polignac number, because 47171205 - 2⁷ = 47171077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47171207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26731 + ... + 28440.

It is an arithmetic number, because the mean of its divisors is an integer number (3586180).

Almost surely, 2^47171205 is an apocalyptic number.

47171205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47171205 is a deficient number, since it is larger than the sum of its proper divisors (38897115).

47171205 is a wasteful number, since it uses less digits than its factorization.

47171205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55201 (or 55198 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 47171205 is about 6868.1296580656. The cubic root of 47171205 is about 361.3202678571.

Adding to 47171205 its reverse (50217174), we get a palindrome (97388379).

The spelling of 47171205 in words is "forty-seven million, one hundred seventy-one thousand, two hundred five".