81495 has 12 divisors (see below), whose sum is σ = 141336. Its totient is φ = 43440.

The previous prime is 81463. The next prime is 81509. The reversal of 81495 is 59418.

81495 is nontrivially palindromic in base 12.

It is not a de Polignac number, because 81495 - 2⁵ = 81463 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 81495.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 861 + ... + 950.

It is an arithmetic number, because the mean of its divisors is an integer number (11778).

2⁸¹⁴⁹⁵ is an apocalyptic number.

81495 is a deficient number, since it is larger than the sum of its proper divisors (59841).

81495 is a wasteful number, since it uses less digits than its factorization.

81495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822 (or 1819 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 81495 is about 285.4732912200. The cubic root of 81495 is about 43.3554456507.

It can be divided in two parts, 814 and 95, that added together give a palindrome (909).

The spelling of 81495 in words is "eighty-one thousand, four hundred ninety-five".