47556647 has 2 divisors, whose sum is σ = 47556648. Its totient is φ = 47556646.

The previous prime is 47556611. The next prime is 47556661. The reversal of 47556647 is 74665574.

47556647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47556647 - 2⁶ = 47556583 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 47556598 and 47556607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47556247) 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, 23778323 + 23778324.

It is an arithmetic number, because the mean of its divisors is an integer number (23778324).

Almost surely, 2^47556647 is an apocalyptic number.

47556647 is a deficient number, since it is larger than the sum of its proper divisors (1).

47556647 is an equidigital number, since it uses as much as digits as its factorization.

47556647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 44.

The square root of 47556647 is about 6896.1327568428. The cubic root of 47556647 is about 362.3017309743.

Adding to 47556647 its reverse (74665574), we get a palindrome (122222221).

The spelling of 47556647 in words is "forty-seven million, five hundred fifty-six thousand, six hundred forty-seven".