81037 has 8 divisors (see below), whose sum is σ = 90720. Its totient is φ = 71760.

The previous prime is 81031. The next prime is 81041. The reversal of 81037 is 73018.

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

It is a cyclic number.

It is not a de Polignac number, because 81037 - 2⁷ = 80909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81031) 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, 514 + ... + 652.

It is an arithmetic number, because the mean of its divisors is an integer number (11340).

2⁸¹⁰³⁷ is an apocalyptic number.

It is an amenable number.

81037 is a deficient number, since it is larger than the sum of its proper divisors (9683).

81037 is a wasteful number, since it uses less digits than its factorization.

81037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 81037 is about 284.6699843679. The cubic root of 81037 is about 43.2740741600.

Subtracting from 81037 its sum of digits (19), we obtain a palindrome (81018).

The spelling of 81037 in words is "eighty-one thousand, thirty-seven".