47257971 has 4 divisors (see below), whose sum is σ = 63010632. Its totient is φ = 31505312.

The previous prime is 47257963. The next prime is 47257979. The reversal of 47257971 is 17975274.

47257971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (47257963) and next prime (47257979).

It is a cyclic number.

It is not a de Polignac number, because 47257971 - 2³ = 47257963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47257979) 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 in 3 ways as a sum of consecutive naturals, for example, 7876326 + ... + 7876331.

It is an arithmetic number, because the mean of its divisors is an integer number (15752658).

Almost surely, 2^47257971 is an apocalyptic number.

47257971 is a deficient number, since it is larger than the sum of its proper divisors (15752661).

47257971 is a wasteful number, since it uses less digits than its factorization.

47257971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15752660.

The product of its digits is 123480, while the sum is 42.

The square root of 47257971 is about 6874.4433229171. The cubic root of 47257971 is about 361.5416678419.

The spelling of 47257971 in words is "forty-seven million, two hundred fifty-seven thousand, nine hundred seventy-one".