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12775013 is a prime number
BaseRepresentation
bin110000101110…
…111001100101
3220001001000122
4300232321211
511232300023
61133451325
7213404636
oct60567145
926031018
1012775013
117236069
124340b45
1328539a4
1419a788d
1511c52c8
hexc2ee65

12775013 has 2 divisors, whose sum is σ = 12775014. Its totient is φ = 12775012.

The previous prime is 12775003. The next prime is 12775031. The reversal of 12775013 is 31057721.

Together with next prime (12775031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8862529 + 3912484 = 2977^2 + 1978^2 .

It is an emirp because it is prime and its reverse (31057721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12775013 - 28 = 12774757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12775003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6387506 + 6387507.

It is an arithmetic number, because the mean of its divisors is an integer number (6387507).

Almost surely, 212775013 is an apocalyptic number.

It is an amenable number.

12775013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12775013 is an equidigital number, since it uses as much as digits as its factorization.

12775013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 12775013 is about 3574.2150187139. The cubic root of 12775013 is about 233.7691065054.

The spelling of 12775013 in words is "twelve million, seven hundred seventy-five thousand, thirteen".