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12548479 is a prime number
BaseRepresentation
bin101111110111…
…100101111111
3212121112021111
4233313211333
511203022404
61124542451
7211442326
oct57674577
925545244
1012548479
1170a0949
124251a27
1327a4848
1419490bd
15117d104
hexbf797f

12548479 has 2 divisors, whose sum is σ = 12548480. Its totient is φ = 12548478.

The previous prime is 12548477. The next prime is 12548491. The reversal of 12548479 is 97484521.

It is a weak prime.

It is an emirp because it is prime and its reverse (97484521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12548479 - 21 = 12548477 is a prime.

It is a super-3 number, since 3×125484793 (a number of 22 digits) contains 333 as substring.

Together with 12548477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12548477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6274239 + 6274240.

It is an arithmetic number, because the mean of its divisors is an integer number (6274240).

Almost surely, 212548479 is an apocalyptic number.

12548479 is a deficient number, since it is larger than the sum of its proper divisors (1).

12548479 is an equidigital number, since it uses as much as digits as its factorization.

12548479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 12548479 is about 3542.3832373135. The cubic root of 12548479 is about 232.3790807618.

The spelling of 12548479 in words is "twelve million, five hundred forty-eight thousand, four hundred seventy-nine".