47402161 has 2 divisors, whose sum is σ = 47402162. Its totient is φ = 47402160.

The previous prime is 47402141. The next prime is 47402183. The reversal of 47402161 is 16120474.

47402161 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., 46662561 + 739600 = 6831^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 47402161 - 2⁹ = 47401649 is a prime.

It is not a weakly prime, because it can be changed into another prime (47402101) 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, 23701080 + 23701081.

It is an arithmetic number, because the mean of its divisors is an integer number (23701081).

Almost surely, 2^47402161 is an apocalyptic number.

It is an amenable number.

47402161 is a deficient number, since it is larger than the sum of its proper divisors (1).

47402161 is an equidigital number, since it uses as much as digits as its factorization.

47402161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 47402161 is about 6884.9227301401. The cubic root of 47402161 is about 361.9089975049.

The spelling of 47402161 in words is "forty-seven million, four hundred two thousand, one hundred sixty-one".