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12975085 = 52595017
BaseRepresentation
bin110001011111…
…101111101101
3220102012110201
4301133233231
511310200320
61142033501
7215200144
oct61375755
926365421
1012975085
117362412
124418891
1328c3a86
141a1a75b
15121470a
hexc5fbed

12975085 has 4 divisors (see below), whose sum is σ = 15570108. Its totient is φ = 10380064.

The previous prime is 12975077. The next prime is 12975091. The reversal of 12975085 is 58057921.

12975085 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 9357481 + 3617604 = 3059^2 + 1902^2 .

It is a cyclic number.

It is not a de Polignac number, because 12975085 - 23 = 12975077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1297504 + ... + 1297513.

It is an arithmetic number, because the mean of its divisors is an integer number (3892527).

Almost surely, 212975085 is an apocalyptic number.

It is an amenable number.

12975085 is a deficient number, since it is larger than the sum of its proper divisors (2595023).

12975085 is an equidigital number, since it uses as much as digits as its factorization.

12975085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595022.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 12975085 is about 3602.0945295758. The cubic root of 12975085 is about 234.9831585939.

The spelling of 12975085 in words is "twelve million, nine hundred seventy-five thousand, eighty-five".

Divisors: 1 5 2595017 12975085