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BaseRepresentation
bin10011110100101011
311010101020
4103310223
510044240
61423523
7455502
oct236453
9133336
1081195
1156004
123aba3
132ac5a
1421839
15190d0
hex13d2b

81195 has 8 divisors (see below), whose sum is σ = 129936. Its totient is φ = 43296.

The previous prime is 81181. The next prime is 81197. The reversal of 81195 is 59118.

It can be divided in two parts, 81 and 195, that added together give a triangular number (276 = T23).

81195 is nontrivially palindromic in base 12.

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

It is not a de Polignac number, because 81195 - 25 = 81163 is a prime.

81195 is a lucky number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (81197) 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, 2692 + ... + 2721.

It is an arithmetic number, because the mean of its divisors is an integer number (16242).

281195 is an apocalyptic number.

81195 is a deficient number, since it is larger than the sum of its proper divisors (48741).

81195 is a wasteful number, since it uses less digits than its factorization.

81195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421.

The product of its digits is 360, while the sum is 24.

The square root of 81195 is about 284.9473635604. The cubic root of 81195 is about 43.3021801070.

The spelling of 81195 in words is "eighty-one thousand, one hundred ninety-five".

Divisors: 1 3 5 15 5413 16239 27065 81195