47916161 has 4 divisors (see below), whose sum is σ = 48266052. Its totient is φ = 47566272.

The previous prime is 47916137. The next prime is 47916191. The reversal of 47916161 is 16161974.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38056561 + 9859600 = 6169^2 + 3140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47916161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47916101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174740 + ... + 175013.

It is an arithmetic number, because the mean of its divisors is an integer number (12066513).

Almost surely, 2^47916161 is an apocalyptic number.

It is an amenable number.

47916161 is a deficient number, since it is larger than the sum of its proper divisors (349891).

47916161 is a wasteful number, since it uses less digits than its factorization.

47916161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349890.

The product of its digits is 9072, while the sum is 35.

The square root of 47916161 is about 6922.1500272675. The cubic root of 47916161 is about 363.2124041811.

The spelling of 47916161 in words is "forty-seven million, nine hundred sixteen thousand, one hundred sixty-one".