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13082081 is a prime number
BaseRepresentation
bin110001111001…
…110111100001
3220121122020112
4301321313201
511322111311
61144221105
7216124115
oct61716741
926548215
1013082081
117425841
12446a795
13293069c
141a47745
15123628b
hexc79de1

13082081 has 2 divisors, whose sum is σ = 13082082. Its totient is φ = 13082080.

The previous prime is 13082077. The next prime is 13082107. The reversal of 13082081 is 18028031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8755681 + 4326400 = 2959^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 13082081 - 22 = 13082077 is a prime.

It is a super-2 number, since 2×130820812 = 342281686581122, which contains 22 as substring.

It is equal to p854213 and since 13082081 and 854213 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 (13082581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6541040 + 6541041.

It is an arithmetic number, because the mean of its divisors is an integer number (6541041).

Almost surely, 213082081 is an apocalyptic number.

It is an amenable number.

13082081 is a deficient number, since it is larger than the sum of its proper divisors (1).

13082081 is an equidigital number, since it uses as much as digits as its factorization.

13082081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 13082081 is about 3616.9159514703. The cubic root of 13082081 is about 235.6273024281.

The spelling of 13082081 in words is "thirteen million, eighty-two thousand, eighty-one".