47090161 has 2 divisors, whose sum is σ = 47090162. Its totient is φ = 47090160.

The previous prime is 47090149. The next prime is 47090191. The reversal of 47090161 is 16109074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26214400 + 20875761 = 5120^2 + 4569^2 .

It is a cyclic number.

It is not a de Polignac number, because 47090161 - 2¹⁵ = 47057393 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (47090101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23545080 + 23545081.

It is an arithmetic number, because the mean of its divisors is an integer number (23545081).

Almost surely, 2^47090161 is an apocalyptic number.

It is an amenable number.

47090161 is a deficient number, since it is larger than the sum of its proper divisors (1).

47090161 is an equidigital number, since it uses as much as digits as its factorization.

47090161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 47090161 is about 6862.2271166145. The cubic root of 47090161 is about 361.1132232846.

The spelling of 47090161 in words is "forty-seven million, ninety thousand, one hundred sixty-one".