47585509 has 2 divisors, whose sum is σ = 47585510. Its totient is φ = 47585508.

The previous prime is 47585497. The next prime is 47585537. The reversal of 47585509 is 90558574.

47585509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47568609 + 16900 = 6897^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 47585509 - 2⁷ = 47585381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47585579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23792754 + 23792755.

It is an arithmetic number, because the mean of its divisors is an integer number (23792755).

Almost surely, 2^47585509 is an apocalyptic number.

It is an amenable number.

47585509 is a deficient number, since it is larger than the sum of its proper divisors (1).

47585509 is an equidigital number, since it uses as much as digits as its factorization.

47585509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 47585509 is about 6898.2250615648. The cubic root of 47585509 is about 362.3750094645.

The spelling of 47585509 in words is "forty-seven million, five hundred eighty-five thousand, five hundred nine".