81080 has 16 divisors (see below), whose sum is σ = 182520. Its totient is φ = 32416.

The previous prime is 81077. The next prime is 81083. The reversal of 81080 is 8018.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (81077) and next prime (81083).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974 + ... + 1053.

2⁸¹⁰⁸⁰ is an apocalyptic number.

It is an amenable number.

81080 is an abundant number, since it is smaller than the sum of its proper divisors (101440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91260).

81080 is a wasteful number, since it uses less digits than its factorization.

81080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038 (or 2034 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 81080 is about 284.7455004034. The cubic root of 81080 is about 43.2817268625.

Adding to 81080 its reverse (8018), we get a palindrome (89098).

The spelling of 81080 in words is "eighty-one thousand, eighty".