47147161 has 4 divisors (see below), whose sum is σ = 47254032. Its totient is φ = 47040292.

The previous prime is 47147159. The next prime is 47147203. The reversal of 47147161 is 16174174.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47147161 - 2¹ = 47147159 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47147101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52771 + ... + 53656.

It is an arithmetic number, because the mean of its divisors is an integer number (11813508).

Almost surely, 2^47147161 is an apocalyptic number.

It is an amenable number.

47147161 is a deficient number, since it is larger than the sum of its proper divisors (106871).

47147161 is a wasteful number, since it uses less digits than its factorization.

47147161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106870.

The product of its digits is 4704, while the sum is 31.

The square root of 47147161 is about 6866.3790311925. The cubic root of 47147161 is about 361.2588669734.

The spelling of 47147161 in words is "forty-seven million, one hundred forty-seven thousand, one hundred sixty-one".