47857085 has 4 divisors (see below), whose sum is σ = 57428508. Its totient is φ = 38285664.

The previous prime is 47857081. The next prime is 47857093. The reversal of 47857085 is 58075874.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5098564 + 42758521 = 2258^2 + 6539^2 .

It is a cyclic number.

It is not a de Polignac number, because 47857085 - 2² = 47857081 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47857081) 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 3 ways as a sum of consecutive naturals, for example, 4785704 + ... + 4785713.

It is an arithmetic number, because the mean of its divisors is an integer number (14357127).

Almost surely, 2^47857085 is an apocalyptic number.

It is an amenable number.

47857085 is a deficient number, since it is larger than the sum of its proper divisors (9571423).

47857085 is an equidigital number, since it uses as much as digits as its factorization.

47857085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9571422.

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 47857085 is about 6917.8815398936. The cubic root of 47857085 is about 363.0630741862.

The spelling of 47857085 in words is "forty-seven million, eight hundred fifty-seven thousand, eighty-five".