200181 has 8 divisors (see below), whose sum is σ = 272160. Its totient is φ = 130832.

The previous prime is 200177. The next prime is 200183. The reversal of 200181 is 181002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200181 - 2² = 200177 is a prime.

It is a super-2 number, since 2×200181² = 80144865522, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 200181.

It is not an unprimeable number, because it can be changed into a prime (200183) 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 7 ways as a sum of consecutive naturals, for example, 471 + ... + 788.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2²⁰⁰¹⁸¹ is an apocalyptic number.

It is an amenable number.

200181 is a deficient number, since it is larger than the sum of its proper divisors (71979).

200181 is a wasteful number, since it uses less digits than its factorization.

200181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 200181 is about 447.4159138877. The cubic root of 200181 is about 58.4979910187.

Adding to 200181 its reverse (181002), we get a palindrome (381183).

The spelling of 200181 in words is "two hundred thousand, one hundred eighty-one".