47165161 has 4 divisors (see below), whose sum is σ = 47425924. Its totient is φ = 46904400.

The previous prime is 47165143. The next prime is 47165179. The reversal of 47165161 is 16156174.

47165161 = 165² + 166² + ... + 526².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16156174 = 2 ⋅8078087.

It is an interprime number because it is at equal distance from previous prime (47165143) and next prime (47165179).

It can be written as a sum of positive squares in 2 ways, for example, as 5433561 + 41731600 = 2331^2 + 6460^2 .

It is a cyclic number.

It is not a de Polignac number, because 47165161 - 2⁷ = 47165033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47165101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130110 + ... + 130471.

It is an arithmetic number, because the mean of its divisors is an integer number (11856481).

Almost surely, 2^47165161 is an apocalyptic number.

It is an amenable number.

47165161 is a deficient number, since it is larger than the sum of its proper divisors (260763).

47165161 is a wasteful number, since it uses less digits than its factorization.

47165161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260762.

The product of its digits is 5040, while the sum is 31.

The square root of 47165161 is about 6867.6896406288. The cubic root of 47165161 is about 361.3048353280.

The spelling of 47165161 in words is "forty-seven million, one hundred sixty-five thousand, one hundred sixty-one".