47845901 has 2 divisors, whose sum is σ = 47845902. Its totient is φ = 47845900.

The previous prime is 47845867. The next prime is 47845937. The reversal of 47845901 is 10954874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28879876 + 18966025 = 5374^2 + 4355^2 .

It is a cyclic number.

It is not a de Polignac number, because 47845901 - 2¹⁰ = 47844877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47845001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23922950 + 23922951.

It is an arithmetic number, because the mean of its divisors is an integer number (23922951).

Almost surely, 2^47845901 is an apocalyptic number.

It is an amenable number.

47845901 is a deficient number, since it is larger than the sum of its proper divisors (1).

47845901 is an equidigital number, since it uses as much as digits as its factorization.

47845901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 47845901 is about 6917.0731527142. The cubic root of 47845901 is about 363.0347898770.

The spelling of 47845901 in words is "forty-seven million, eight hundred forty-five thousand, nine hundred one".