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12530797 is a prime number
BaseRepresentation
bin101111110011…
…010001101101
3212120122000121
4233303101231
511201441142
61124324541
7211336636
oct57632155
925518017
1012530797
117089634
124243751
132799796
14194288d
151177c67
hexbf346d

12530797 has 2 divisors, whose sum is σ = 12530798. Its totient is φ = 12530796.

The previous prime is 12530783. The next prime is 12530801. The reversal of 12530797 is 79703521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9771876 + 2758921 = 3126^2 + 1661^2 .

It is an emirp because it is prime and its reverse (79703521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12530797 - 211 = 12528749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12539797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6265398 + 6265399.

It is an arithmetic number, because the mean of its divisors is an integer number (6265399).

Almost surely, 212530797 is an apocalyptic number.

It is an amenable number.

12530797 is a deficient number, since it is larger than the sum of its proper divisors (1).

12530797 is an equidigital number, since it uses as much as digits as its factorization.

12530797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 12530797 is about 3539.8865801039. The cubic root of 12530797 is about 232.2698813820.

The spelling of 12530797 in words is "twelve million, five hundred thirty thousand, seven hundred ninety-seven".