47180161 has 4 divisors (see below), whose sum is σ = 53920192. Its totient is φ = 40440132.

The previous prime is 47180149. The next prime is 47180167. The reversal of 47180161 is 16108174.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16108174 = 2 ⋅8054087.

It is a cyclic number.

It is not a de Polignac number, because 47180161 - 2⁷ = 47180033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47180167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3370005 + ... + 3370018.

It is an arithmetic number, because the mean of its divisors is an integer number (13480048).

Almost surely, 2^47180161 is an apocalyptic number.

It is an amenable number.

47180161 is a deficient number, since it is larger than the sum of its proper divisors (6740031).

47180161 is an equidigital number, since it uses as much as digits as its factorization.

47180161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740030.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 47180161 is about 6868.7816241310. The cubic root of 47180161 is about 361.3431333570.

The spelling of 47180161 in words is "forty-seven million, one hundred eighty thousand, one hundred sixty-one".