81295 has 8 divisors (see below), whose sum is σ = 99360. Its totient is φ = 63840.

The previous prime is 81293. The next prime is 81299. The reversal of 81295 is 59218.

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

It is not a de Polignac number, because 81295 - 2¹ = 81293 is a prime.

81295 is a lucky number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81293) 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 7 ways as a sum of consecutive naturals, for example, 241 + ... + 469.

It is an arithmetic number, because the mean of its divisors is an integer number (12420).

2⁸¹²⁹⁵ is an apocalyptic number.

81295 is a deficient number, since it is larger than the sum of its proper divisors (18065).

81295 is a wasteful number, since it uses less digits than its factorization.

81295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305.

The product of its digits is 720, while the sum is 25.

The square root of 81295 is about 285.1227805701. The cubic root of 81295 is about 43.3199498446.

The spelling of 81295 in words is "eighty-one thousand, two hundred ninety-five".