47222187 has 4 divisors (see below), whose sum is σ = 62962920. Its totient is φ = 31481456.

The previous prime is 47222159. The next prime is 47222221. The reversal of 47222187 is 78122274.

47222187 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 not a de Polignac number, because 47222187 - 2¹¹ = 47220139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47222117) 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, 7870362 + ... + 7870367.

It is an arithmetic number, because the mean of its divisors is an integer number (15740730).

Almost surely, 2^47222187 is an apocalyptic number.

47222187 is a deficient number, since it is larger than the sum of its proper divisors (15740733).

47222187 is a wasteful number, since it uses less digits than its factorization.

47222187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15740732.

The product of its digits is 12544, while the sum is 33.

The square root of 47222187 is about 6871.8401465692. The cubic root of 47222187 is about 361.4503910085.

The spelling of 47222187 in words is "forty-seven million, two hundred twenty-two thousand, one hundred eighty-seven".