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111395105 = 522279021
BaseRepresentation
bin1101010001111…
…00000100100001
321202121110100122
412220330010201
5212004120410
615015330025
72521562033
oct650740441
9252543318
10111395105
1157974878
1231380915
131a103383
1410b19c53
159ba5e55
hex6a3c121

111395105 has 4 divisors (see below), whose sum is σ = 133674132. Its totient is φ = 89116080.

The previous prime is 111395099. The next prime is 111395107. The reversal of 111395105 is 501593111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501593111 = 975171063.

It can be written as a sum of positive squares in 2 ways, for example, as 67782289 + 43612816 = 8233^2 + 6604^2 .

It is not a de Polignac number, because 111395105 - 26 = 111395041 is a prime.

It is a super-2 number, since 2×1113951052 = 24817738835922050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111395107) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11139506 + ... + 11139515.

It is an arithmetic number, because the mean of its divisors is an integer number (33418533).

Almost surely, 2111395105 is an apocalyptic number.

It is an amenable number.

111395105 is a deficient number, since it is larger than the sum of its proper divisors (22279027).

111395105 is an equidigital number, since it uses as much as digits as its factorization.

111395105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22279026.

The product of its (nonzero) digits is 675, while the sum is 26.

The square root of 111395105 is about 10554.3879500424. The cubic root of 111395105 is about 481.1590983648.

The spelling of 111395105 in words is "one hundred eleven million, three hundred ninety-five thousand, one hundred five".

Divisors: 1 5 22279021 111395105