47011805 has 4 divisors (see below), whose sum is σ = 56414172. Its totient is φ = 37609440.

The previous prime is 47011759. The next prime is 47011819. The reversal of 47011805 is 50811074.

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 30349081 + 16662724 = 5509^2 + 4082^2 .

It is not a de Polignac number, because 47011805 - 2¹⁶ = 46946269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 4701176 + ... + 4701185.

It is an arithmetic number, because the mean of its divisors is an integer number (14103543).

Almost surely, 2^47011805 is an apocalyptic number.

It is an amenable number.

47011805 is a deficient number, since it is larger than the sum of its proper divisors (9402367).

47011805 is an equidigital number, since it uses as much as digits as its factorization.

47011805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9402366.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 47011805 is about 6856.5155144578. The cubic root of 47011805 is about 360.9128198051.

Adding to 47011805 its reverse (50811074), we get a palindrome (97822879).

The spelling of 47011805 in words is "forty-seven million, eleven thousand, eight hundred five".