47820211 has 2 divisors, whose sum is σ = 47820212. Its totient is φ = 47820210.

The previous prime is 47820191. The next prime is 47820229. The reversal of 47820211 is 11202874.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47820211 - 2⁷ = 47820083 is a prime.

It is not a weakly prime, because it can be changed into another prime (47820251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23910105 + 23910106.

It is an arithmetic number, because the mean of its divisors is an integer number (23910106).

Almost surely, 2^47820211 is an apocalyptic number.

47820211 is a deficient number, since it is larger than the sum of its proper divisors (1).

47820211 is an equidigital number, since it uses as much as digits as its factorization.

47820211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 47820211 is about 6915.2159040770. The cubic root of 47820211 is about 362.9698032340.

The spelling of 47820211 in words is "forty-seven million, eight hundred twenty thousand, two hundred eleven".