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56486206081 is a prime number
BaseRepresentation
bin110100100110110101…
…110001101010000001
312101210121202120122201
4310212311301222001
51411140432043311
641541023233201
74036531554364
oct644665615201
9171717676581
1056486206081
1121a56a99748
12ab45148801
1354327a11a6
142a3bd440db
15170901d9c1
hexd26d71a81

56486206081 has 2 divisors, whose sum is σ = 56486206082. Its totient is φ = 56486206080.

The previous prime is 56486206079. The next prime is 56486206121. The reversal of 56486206081 is 18060268465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30203311681 + 26282894400 = 173791^2 + 162120^2 .

It is a cyclic number.

It is not a de Polignac number, because 56486206081 - 21 = 56486206079 is a prime.

It is a super-2 number, since 2×564862060812 (a number of 22 digits) contains 22 as substring.

Together with 56486206079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56486206181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28243103040 + 28243103041.

It is an arithmetic number, because the mean of its divisors is an integer number (28243103041).

Almost surely, 256486206081 is an apocalyptic number.

It is an amenable number.

56486206081 is a deficient number, since it is larger than the sum of its proper divisors (1).

56486206081 is an equidigital number, since it uses as much as digits as its factorization.

56486206081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 56486206081 in words is "fifty-six billion, four hundred eighty-six million, two hundred six thousand, eighty-one".