47152161 has 18 divisors (see below), whose sum is σ = 79229202. Its totient is φ = 26943840.

The previous prime is 47152159. The next prime is 47152181. The reversal of 47152161 is 16125174.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 46580625 + 571536 = 6825^2 + 756^2 .

It is not a de Polignac number, because 47152161 - 2¹ = 47152159 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47152181) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 53020 + ... + 53901.

Almost surely, 2^47152161 is an apocalyptic number.

It is an amenable number.

47152161 is a deficient number, since it is larger than the sum of its proper divisors (32077041).

47152161 is a wasteful number, since it uses less digits than its factorization.

47152161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106941 (or 106931 counting only the distinct ones).

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

The square root of 47152161 is about 6866.7431144612. The cubic root of 47152161 is about 361.2716371343.

The spelling of 47152161 in words is "forty-seven million, one hundred fifty-two thousand, one hundred sixty-one".