47271857 has 2 divisors, whose sum is σ = 47271858. Its totient is φ = 47271856.

The previous prime is 47271841. The next prime is 47271859. The reversal of 47271857 is 75817274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27920656 + 19351201 = 5284^2 + 4399^2 .

It is a cyclic number.

It is not a de Polignac number, because 47271857 - 2⁴ = 47271841 is a prime.

Together with 47271859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47271859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23635928 + 23635929.

It is an arithmetic number, because the mean of its divisors is an integer number (23635929).

Almost surely, 2^47271857 is an apocalyptic number.

It is an amenable number.

47271857 is a deficient number, since it is larger than the sum of its proper divisors (1).

47271857 is an equidigital number, since it uses as much as digits as its factorization.

47271857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 109760, while the sum is 41.

The square root of 47271857 is about 6875.4532214248. The cubic root of 47271857 is about 361.5770754558.

The spelling of 47271857 in words is "forty-seven million, two hundred seventy-one thousand, eight hundred fifty-seven".