47971161 has 48 divisors (see below), whose sum is σ = 85722624. Its totient is φ = 25224192.

The previous prime is 47971159. The next prime is 47971163. The reversal of 47971161 is 16117974.

It is an interprime number because it is at equal distance from previous prime (47971159) and next prime (47971163).

It is not a de Polignac number, because 47971161 - 2¹ = 47971159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47971163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49861 + ... + 50813.

It is an arithmetic number, because the mean of its divisors is an integer number (1785888).

Almost surely, 2^47971161 is an apocalyptic number.

It is an amenable number.

47971161 is a deficient number, since it is larger than the sum of its proper divisors (37751463).

47971161 is a wasteful number, since it uses less digits than its factorization.

47971161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 1027 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 47971161 is about 6926.1216420158. The cubic root of 47971161 is about 363.3513207341.

The spelling of 47971161 in words is "forty-seven million, nine hundred seventy-one thousand, one hundred sixty-one".