81141 has 16 divisors (see below), whose sum is σ = 120384. Its totient is φ = 48384.

The previous prime is 81131. The next prime is 81157. The reversal of 81141 is 14118.

It is not a de Polignac number, because 81141 - 2⁶ = 81077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81101) 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 15 ways as a sum of consecutive naturals, for example, 1866 + ... + 1908.

It is an arithmetic number, because the mean of its divisors is an integer number (7524).

2⁸¹¹⁴¹ is an apocalyptic number.

It is an amenable number.

81141 is a deficient number, since it is larger than the sum of its proper divisors (39243).

81141 is a wasteful number, since it uses less digits than its factorization.

81141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100.

The product of its digits is 32, while the sum is 15.

The square root of 81141 is about 284.8525934584. The cubic root of 81141 is about 43.2925783816.

Adding to 81141 its reverse (14118), we get a palindrome (95259).

It can be divided in two parts, 81 and 141, that added together give a palindrome (222).

The spelling of 81141 in words is "eighty-one thousand, one hundred forty-one".