47046221 has 2 divisors, whose sum is σ = 47046222. Its totient is φ = 47046220.

The previous prime is 47046193. The next prime is 47046227. The reversal of 47046221 is 12264074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35581225 + 11464996 = 5965^2 + 3386^2 .

It is a cyclic number.

It is not a de Polignac number, because 47046221 - 2¹⁸ = 46784077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47046227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23523110 + 23523111.

It is an arithmetic number, because the mean of its divisors is an integer number (23523111).

Almost surely, 2^47046221 is an apocalyptic number.

It is an amenable number.

47046221 is a deficient number, since it is larger than the sum of its proper divisors (1).

47046221 is an equidigital number, since it uses as much as digits as its factorization.

47046221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 47046221 is about 6859.0247849093. The cubic root of 47046221 is about 361.0008696454. Note that the first 3 decimals are identical.

The spelling of 47046221 in words is "forty-seven million, forty-six thousand, two hundred twenty-one".