81153 has 12 divisors (see below), whose sum is σ = 119808. Its totient is φ = 52920.

The previous prime is 81131. The next prime is 81157. The reversal of 81153 is 35118.

It is a happy number.

It is not a de Polignac number, because 81153 - 2⁸ = 80897 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 81153.

It is not an unprimeable number, because it can be changed into a prime (81157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 576 + ... + 702.

It is an arithmetic number, because the mean of its divisors is an integer number (9984).

2⁸¹¹⁵³ is an apocalyptic number.

It is an amenable number.

81153 is a deficient number, since it is larger than the sum of its proper divisors (38655).

81153 is a wasteful number, since it uses less digits than its factorization.

81153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 201 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 81153 is about 284.8736562057. The cubic root of 81153 is about 43.2947124664.

It can be divided in two parts, 8115 and 3, that added together give a palindrome (8118).

The spelling of 81153 in words is "eighty-one thousand, one hundred fifty-three".