81548 has 24 divisors (see below), whose sum is σ = 159600. Its totient is φ = 36288.

The previous prime is 81547. The next prime is 81551. The reversal of 81548 is 84518.

It is not an unprimeable number, because it can be changed into a prime (81547) 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, 2186 + ... + 2222.

It is an arithmetic number, because the mean of its divisors is an integer number (6650).

2⁸¹⁵⁴⁸ is an apocalyptic number.

It is an amenable number.

81548 is a deficient number, since it is larger than the sum of its proper divisors (78052).

81548 is a wasteful number, since it uses less digits than its factorization.

81548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 87 counting only the distinct ones).

The product of its digits is 1280, while the sum is 26.

The square root of 81548 is about 285.5661044312. The cubic root of 81548 is about 43.3648423036.

Adding to 81548 its product of digits (1280), we get a palindrome (82828).

The spelling of 81548 in words is "eighty-one thousand, five hundred forty-eight".