47267221 has 2 divisors, whose sum is σ = 47267222. Its totient is φ = 47267220.

The previous prime is 47267177. The next prime is 47267237. The reversal of 47267221 is 12276274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27562500 + 19704721 = 5250^2 + 4439^2 .

It is a cyclic number.

It is not a de Polignac number, because 47267221 - 2¹³ = 47259029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47267251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23633610 + 23633611.

It is an arithmetic number, because the mean of its divisors is an integer number (23633611).

Almost surely, 2^47267221 is an apocalyptic number.

It is an amenable number.

47267221 is a deficient number, since it is larger than the sum of its proper divisors (1).

47267221 is an equidigital number, since it uses as much as digits as its factorization.

47267221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 31.

The square root of 47267221 is about 6875.1160717474. The cubic root of 47267221 is about 361.5652549898.

The spelling of 47267221 in words is "forty-seven million, two hundred sixty-seven thousand, two hundred twenty-one".