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54894921860 = 2252994646417
BaseRepresentation
bin110011000111111111…
…100000100010000100
312020200201110222002002
4303013333200202010
51344411044444420
641115100404432
73652230064652
oct630777404204
9166621428062
1054894921860
112130a830319
12a780246718
13523abca5ac
14292a87bdd2
151664492075
hexcc7fe0884

54894921860 has 24 divisors (see below), whose sum is σ = 119254486680. Its totient is φ = 21200797184.

The previous prime is 54894921857. The next prime is 54894921877. The reversal of 54894921860 is 6812949845.

It can be written as a sum of positive squares in 4 ways, for example, as 15554579524 + 39340342336 = 124718^2 + 198344^2 .

It is a super-3 number, since 3×548949218603 (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54894921796 and 54894921805.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 47322629 + ... + 47323788.

It is an arithmetic number, because the mean of its divisors is an integer number (4968936945).

Almost surely, 254894921860 is an apocalyptic number.

It is an amenable number.

54894921860 is an abundant number, since it is smaller than the sum of its proper divisors (64359564820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54894921860 is a wasteful number, since it uses less digits than its factorization.

54894921860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94646455 (or 94646453 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 54894921860 in words is "fifty-four billion, eight hundred ninety-four million, nine hundred twenty-one thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 94646417 189292834 378585668 473232085 946464170 1892928340 2744746093 5489492186 10978984372 13723730465 27447460930 54894921860