47857371 has 8 divisors (see below), whose sum is σ = 67168320. Its totient is φ = 30225672.

The previous prime is 47857351. The next prime is 47857393. The reversal of 47857371 is 17375874.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47857371 - 2⁵ = 47857339 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (47857301) 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 in 7 ways as a sum of consecutive naturals, for example, 419745 + ... + 419858.

It is an arithmetic number, because the mean of its divisors is an integer number (8396040).

Almost surely, 2^47857371 is an apocalyptic number.

47857371 is a deficient number, since it is larger than the sum of its proper divisors (19310949).

47857371 is a wasteful number, since it uses less digits than its factorization.

47857371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839625.

The product of its digits is 164640, while the sum is 42.

The square root of 47857371 is about 6917.9022109307. The cubic root of 47857371 is about 363.0637974217.

The spelling of 47857371 in words is "forty-seven million, eight hundred fifty-seven thousand, three hundred seventy-one".