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81096095 = 553306023
BaseRepresentation
bin1001101010101…
…10110110011111
312122121002221002
410311112312133
5131230033340
612014100515
72003206523
oct465266637
9178532832
1081096095
114185a773
12231aa73b
1313a55272
14aaadd83
1571bd715
hex4d56d9f

81096095 has 8 divisors (see below), whose sum is σ = 99151776. Its totient is φ = 63652576.

The previous prime is 81096089. The next prime is 81096097. The reversal of 81096095 is 59069018.

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

It is not a de Polignac number, because 81096095 - 210 = 81095071 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 (81096097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152747 + ... + 153276.

It is an arithmetic number, because the mean of its divisors is an integer number (12393972).

Almost surely, 281096095 is an apocalyptic number.

81096095 is a deficient number, since it is larger than the sum of its proper divisors (18055681).

81096095 is a wasteful number, since it uses less digits than its factorization.

81096095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306081.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 81096095 is about 9005.3370286736. The cubic root of 81096095 is about 432.8459059090.

The spelling of 81096095 in words is "eighty-one million, ninety-six thousand, ninety-five".

Divisors: 1 5 53 265 306023 1530115 16219219 81096095