201081 has 8 divisors (see below), whose sum is σ = 271264. Its totient is φ = 132480.

The previous prime is 201073. The next prime is 201101. The reversal of 201081 is 180102.

It is a happy number.

201081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 201081 - 2³ = 201073 is a prime.

It is a super-2 number, since 2×201081² = 80867137122, which contains 22 as substring.

It is a Duffinian number.

201081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (201011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55 + ... + 636.

It is an arithmetic number, because the mean of its divisors is an integer number (33908).

2²⁰¹⁰⁸¹ is an apocalyptic number.

It is an amenable number.

201081 is a deficient number, since it is larger than the sum of its proper divisors (70183).

201081 is an equidigital number, since it uses as much as digits as its factorization.

201081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791.

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

The square root of 201081 is about 448.4205615268. The cubic root of 201081 is about 58.5855276107.

Adding to 201081 its reverse (180102), we get a palindrome (381183).

The spelling of 201081 in words is "two hundred one thousand, eighty-one".