81395 has 8 divisors (see below), whose sum is σ = 99456. Its totient is φ = 63936.

The previous prime is 81373. The next prime is 81401. The reversal of 81395 is 59318.

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 81395 - 2⁶ = 81331 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254 + ... + 476.

It is an arithmetic number, because the mean of its divisors is an integer number (12432).

2⁸¹³⁹⁵ is an apocalyptic number.

81395 is a deficient number, since it is larger than the sum of its proper divisors (18061).

81395 is a wasteful number, since it uses less digits than its factorization.

81395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301.

The product of its digits is 1080, while the sum is 26.

The square root of 81395 is about 285.2980897237. The cubic root of 81395 is about 43.3377050159.

The spelling of 81395 in words is "eighty-one thousand, three hundred ninety-five".