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54345254281 is a prime number
BaseRepresentation
bin110010100111001110…
…101100010110001001
312012021102011221220121
4302213032230112021
51342244341114111
640544343223241
73632504016403
oct624716542611
9165242157817
1054345254281
112105852a99a
12a648147b21
1351810754c6
1428b7877b73
1516310b7871
hexca73ac589

54345254281 has 2 divisors, whose sum is σ = 54345254282. Its totient is φ = 54345254280.

The previous prime is 54345254267. The next prime is 54345254291. The reversal of 54345254281 is 18245254345.

54345254281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31137778681 + 23207475600 = 176459^2 + 152340^2 .

It is a cyclic number.

It is not a de Polignac number, because 54345254281 - 27 = 54345254153 is a prime.

It is a super-2 number, since 2×543452542812 (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54345254251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27172627140 + 27172627141.

It is an arithmetic number, because the mean of its divisors is an integer number (27172627141).

Almost surely, 254345254281 is an apocalyptic number.

It is an amenable number.

54345254281 is a deficient number, since it is larger than the sum of its proper divisors (1).

54345254281 is an equidigital number, since it uses as much as digits as its factorization.

54345254281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768000, while the sum is 43.

The spelling of 54345254281 in words is "fifty-four billion, three hundred forty-five million, two hundred fifty-four thousand, two hundred eighty-one".