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8101085 = 51620217
BaseRepresentation
bin11110111001110011011101
3120020120121012
4132321303131
54033213320
6445345005
7125600216
oct36716335
916216535
108101085
114633513
122868165
1318a8455
14110c40d
15aa04c5
hex7b9cdd

8101085 has 4 divisors (see below), whose sum is σ = 9721308. Its totient is φ = 6480864.

The previous prime is 8101081. The next prime is 8101097. The reversal of 8101085 is 5801018.

8101085 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2815684 + 5285401 = 1678^2 + 2299^2 .

It is a cyclic number.

It is not a de Polignac number, because 8101085 - 22 = 8101081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8101085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8101081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810104 + ... + 810113.

It is an arithmetic number, because the mean of its divisors is an integer number (2430327).

Almost surely, 28101085 is an apocalyptic number.

It is an amenable number.

8101085 is a deficient number, since it is larger than the sum of its proper divisors (1620223).

8101085 is a wasteful number, since it uses less digits than its factorization.

8101085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620222.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 8101085 is about 2846.2405028388. The cubic root of 8101085 is about 200.8388517200.

The spelling of 8101085 in words is "eight million, one hundred one thousand, eighty-five".

Divisors: 1 5 1620217 8101085