47137561 has 2 divisors, whose sum is σ = 47137562. Its totient is φ = 47137560.

The previous prime is 47137543. The next prime is 47137621. The reversal of 47137561 is 16573174.

47137561 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., 33120025 + 14017536 = 5755^2 + 3744^2 .

It is a cyclic number.

It is not a de Polignac number, because 47137561 - 2⁵ = 47137529 is a prime.

It is not a weakly prime, because it can be changed into another prime (47137501) 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, 23568780 + 23568781.

It is an arithmetic number, because the mean of its divisors is an integer number (23568781).

Almost surely, 2^47137561 is an apocalyptic number.

It is an amenable number.

47137561 is a deficient number, since it is larger than the sum of its proper divisors (1).

47137561 is an equidigital number, since it uses as much as digits as its factorization.

47137561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 34.

The square root of 47137561 is about 6865.6799371949. The cubic root of 47137561 is about 361.2343457335.

The spelling of 47137561 in words is "forty-seven million, one hundred thirty-seven thousand, five hundred sixty-one".