47875921 has 2 divisors, whose sum is σ = 47875922. Its totient is φ = 47875920.

The previous prime is 47875879. The next prime is 47875951. The reversal of 47875921 is 12957874.

47875921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27300625 + 20575296 = 5225^2 + 4536^2 .

It is a cyclic number.

It is not a de Polignac number, because 47875921 - 2¹¹ = 47873873 is a prime.

It is not a weakly prime, because it can be changed into another prime (47875951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23937960 + 23937961.

It is an arithmetic number, because the mean of its divisors is an integer number (23937961).

Almost surely, 2^47875921 is an apocalyptic number.

It is an amenable number.

47875921 is a deficient number, since it is larger than the sum of its proper divisors (1).

47875921 is an equidigital number, since it uses as much as digits as its factorization.

47875921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 43.

The square root of 47875921 is about 6919.2428053942. The cubic root of 47875921 is about 363.1107004263.

The spelling of 47875921 in words is "forty-seven million, eight hundred seventy-five thousand, nine hundred twenty-one".