47165121 has 12 divisors (see below), whose sum is σ = 69969172. Its totient is φ = 30593376.

The previous prime is 47165117. The next prime is 47165137. The reversal of 47165121 is 12156174.

It is a happy number.

47165121 is a `hidden beast` number, since 4 + 7 + 1 + 651 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41216400 + 5948721 = 6420^2 + 2439^2 .

It is not a de Polignac number, because 47165121 - 2² = 47165117 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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70486 + ... + 71151.

Almost surely, 2^47165121 is an apocalyptic number.

It is an amenable number.

47165121 is a deficient number, since it is larger than the sum of its proper divisors (22804051).

47165121 is a wasteful number, since it uses less digits than its factorization.

47165121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141680 (or 141677 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 47165121 is about 6867.6867284407. The cubic root of 47165121 is about 361.3047331891.

The spelling of 47165121 in words is "forty-seven million, one hundred sixty-five thousand, one hundred twenty-one".