47957971 has 2 divisors, whose sum is σ = 47957972. Its totient is φ = 47957970.

The previous prime is 47957963. The next prime is 47957993. The reversal of 47957971 is 17975974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47957971 - 2³ = 47957963 is a prime.

It is not a weakly prime, because it can be changed into another prime (47957911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23978985 + 23978986.

It is an arithmetic number, because the mean of its divisors is an integer number (23978986).

Almost surely, 2^47957971 is an apocalyptic number.

47957971 is a deficient number, since it is larger than the sum of its proper divisors (1).

47957971 is an equidigital number, since it uses as much as digits as its factorization.

47957971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 49.

The square root of 47957971 is about 6925.1693842100. The cubic root of 47957971 is about 363.3180157015.

The spelling of 47957971 in words is "forty-seven million, nine hundred fifty-seven thousand, nine hundred seventy-one".