47426221 has 2 divisors, whose sum is σ = 47426222. Its totient is φ = 47426220.

The previous prime is 47426201. The next prime is 47426237. The reversal of 47426221 is 12262474.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35832196 + 11594025 = 5986^2 + 3405^2 .

It is a cyclic number.

It is not a de Polignac number, because 47426221 - 2²¹ = 45329069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47426221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47426201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23713110 + 23713111.

It is an arithmetic number, because the mean of its divisors is an integer number (23713111).

Almost surely, 2^47426221 is an apocalyptic number.

It is an amenable number.

47426221 is a deficient number, since it is larger than the sum of its proper divisors (1).

47426221 is an equidigital number, since it uses as much as digits as its factorization.

47426221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 28.

The square root of 47426221 is about 6886.6698047750. The cubic root of 47426221 is about 361.9702187480.

Adding to 47426221 its reverse (12262474), we get a palindrome (59688695).

The spelling of 47426221 in words is "forty-seven million, four hundred twenty-six thousand, two hundred twenty-one".