47348221 has 2 divisors, whose sum is σ = 47348222. Its totient is φ = 47348220.

The previous prime is 47348201. The next prime is 47348227. The reversal of 47348221 is 12284374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47196900 + 151321 = 6870^2 + 389^2 .

It is a cyclic number.

It is not a de Polignac number, because 47348221 - 2²⁵ = 13793789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47348227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23674110 + 23674111.

It is an arithmetic number, because the mean of its divisors is an integer number (23674111).

Almost surely, 2^47348221 is an apocalyptic number.

It is an amenable number.

47348221 is a deficient number, since it is larger than the sum of its proper divisors (1).

47348221 is an equidigital number, since it uses as much as digits as its factorization.

47348221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 31.

The square root of 47348221 is about 6881.0043598300. The cubic root of 47348221 is about 361.7716705687.

The spelling of 47348221 in words is "forty-seven million, three hundred forty-eight thousand, two hundred twenty-one".