47221745 has 16 divisors (see below), whose sum is σ = 60497280. Its totient is φ = 35280000.

The previous prime is 47221739. The next prime is 47221789. The reversal of 47221745 is 54712274.

47221745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47221745 - 2¹⁶ = 47156209 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3245 + ... + 10245.

It is an arithmetic number, because the mean of its divisors is an integer number (3781080).

Almost surely, 2^47221745 is an apocalyptic number.

It is an amenable number.

47221745 is a deficient number, since it is larger than the sum of its proper divisors (13275535).

47221745 is a wasteful number, since it uses less digits than its factorization.

47221745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7096.

The product of its digits is 15680, while the sum is 32.

The square root of 47221745 is about 6871.8079862581. The cubic root of 47221745 is about 361.4492632789.

The spelling of 47221745 in words is "forty-seven million, two hundred twenty-one thousand, seven hundred forty-five".