47861971 has 2 divisors, whose sum is σ = 47861972. Its totient is φ = 47861970.

The previous prime is 47861917. The next prime is 47862013. The reversal of 47861971 is 17916874.

47861971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (47861917) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47861971 - 2²⁵ = 14307539 is a prime.

It is not a weakly prime, because it can be changed into another prime (47861371) 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, 23930985 + 23930986.

It is an arithmetic number, because the mean of its divisors is an integer number (23930986).

Almost surely, 2^47861971 is an apocalyptic number.

47861971 is a deficient number, since it is larger than the sum of its proper divisors (1).

47861971 is an equidigital number, since it uses as much as digits as its factorization.

47861971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 43.

The square root of 47861971 is about 6918.2346736722. The cubic root of 47861971 is about 363.0754294854.

The spelling of 47861971 in words is "forty-seven million, eight hundred sixty-one thousand, nine hundred seventy-one".