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12271793 is a prime number
BaseRepresentation
bin101110110100…
…000010110001
3212002110201212
4232310002301
511120144133
61115005505
7206210552
oct56640261
925073655
1012271793
116a21a86
124139895
132708921
1418b6329
151126148
hexbb40b1

12271793 has 2 divisors, whose sum is σ = 12271794. Its totient is φ = 12271792.

The previous prime is 12271769. The next prime is 12271801. The reversal of 12271793 is 39717221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12271009 + 784 = 3503^2 + 28^2 .

It is an emirp because it is prime and its reverse (39717221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12271793 - 28 = 12271537 is a prime.

It is a Chen prime.

It is equal to p804695 and since 12271793 and 804695 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (12274793) 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 as a sum of consecutive naturals, namely, 6135896 + 6135897.

It is an arithmetic number, because the mean of its divisors is an integer number (6135897).

Almost surely, 212271793 is an apocalyptic number.

It is an amenable number.

12271793 is a deficient number, since it is larger than the sum of its proper divisors (1).

12271793 is an equidigital number, since it uses as much as digits as its factorization.

12271793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 32.

The square root of 12271793 is about 3503.1119022949. Note that the first 3 decimals coincide. The cubic root of 12271793 is about 230.6584346226.

The spelling of 12271793 in words is "twelve million, two hundred seventy-one thousand, seven hundred ninety-three".