47217222 has 32 divisors (see below), whose sum is σ = 113000160. Its totient is φ = 14528160.

The previous prime is 47217221. The next prime is 47217241. The reversal of 47217222 is 22271274.

47217222 is a `hidden beast` number, since 472 + 172 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47217221) 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, 32929 + ... + 34332.

It is an arithmetic number, because the mean of its divisors is an integer number (3531255).

Almost surely, 2^47217222 is an apocalyptic number.

47217222 is an abundant number, since it is smaller than the sum of its proper divisors (65782938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47217222 is a wasteful number, since it uses less digits than its factorization.

47217222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67285 (or 67279 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 47217222 is about 6871.4788801247. The cubic root of 47217222 is about 361.4377227819.

Adding to 47217222 its reverse (22271274), we get a palindrome (69488496).

The spelling of 47217222 in words is "forty-seven million, two hundred seventeen thousand, two hundred twenty-two".