47805 has 8 divisors (see below), whose sum is σ = 76512. Its totient is φ = 25488.

The previous prime is 47797. The next prime is 47807. The reversal of 47805 is 50874.

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

It is not a de Polignac number, because 47805 - 2³ = 47797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1579 + ... + 1608.

It is an arithmetic number, because the mean of its divisors is an integer number (9564).

2⁴⁷⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

47805 is a deficient number, since it is larger than the sum of its proper divisors (28707).

47805 is a wasteful number, since it uses less digits than its factorization.

47805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 47805 is about 218.6435455256. The cubic root of 47805 is about 36.2931313796.

The spelling of 47805 in words is "forty-seven thousand, eight hundred five".