201179161 has 4 divisors (see below), whose sum is σ = 201644212. Its totient is φ = 200714112.

The previous prime is 201179141. The next prime is 201179171. The reversal of 201179161 is 161971102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161971102 = 2 ⋅80985551.

It can be written as a sum of positive squares in 2 ways, for example, as 20115225 + 181063936 = 4485^2 + 13456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201179161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201179141) 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, 231876 + ... + 232741.

It is an arithmetic number, because the mean of its divisors is an integer number (50411053).

Almost surely, 2^201179161 is an apocalyptic number.

It is an amenable number.

201179161 is a deficient number, since it is larger than the sum of its proper divisors (465051).

201179161 is an equidigital number, since it uses as much as digits as its factorization.

201179161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465050.

The product of its (nonzero) digits is 756, while the sum is 28.

The square root of 201179161 is about 14183.7639926784. The cubic root of 201179161 is about 585.9505922304.

The spelling of 201179161 in words is "two hundred one million, one hundred seventy-nine thousand, one hundred sixty-one".