47808505 has 16 divisors (see below), whose sum is σ = 60961680. Its totient is φ = 35868672.

The previous prime is 47808499. The next prime is 47808533. The reversal of 47808505 is 50580874.

It can be written as a sum of positive squares in 8 ways, for example, as 32761 + 47775744 = 181^2 + 6912^2 .

It is a cyclic number.

It is not a de Polignac number, because 47808505 - 2¹¹ = 47806457 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27811 + ... + 29479.

It is an arithmetic number, because the mean of its divisors is an integer number (3810105).

Almost surely, 2^47808505 is an apocalyptic number.

It is an amenable number.

47808505 is a deficient number, since it is larger than the sum of its proper divisors (13153175).

47808505 is a wasteful number, since it uses less digits than its factorization.

47808505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028.

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 47808505 is about 6914.3694578754. The cubic root of 47808505 is about 362.9401834618.

The spelling of 47808505 in words is "forty-seven million, eight hundred eight thousand, five hundred five".