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54225005840 = 245677812573
BaseRepresentation
bin110010100000000011…
…111110110100010000
312011222000220201001122
4302200003332310100
51342023100141330
640524410021412
73626513642015
oct624003766420
9164860821048
1054225005840
1120aa6669515
12a613a17868
135162192495
1428a58d570c
1516257635e5
hexca00fed10

54225005840 has 20 divisors (see below), whose sum is σ = 126073138764. Its totient is φ = 21690002304.

The previous prime is 54225005773. The next prime is 54225005843. The reversal of 54225005840 is 4850052245.

It can be written as a sum of positive squares in 2 ways, for example, as 18627882256 + 35597123584 = 136484^2 + 188672^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 54225005840.

It is not an unprimeable number, because it can be changed into a prime (54225005843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338906207 + ... + 338906366.

Almost surely, 254225005840 is an apocalyptic number.

It is an amenable number.

54225005840 is an abundant number, since it is smaller than the sum of its proper divisors (71848132924).

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

54225005840 is a wasteful number, since it uses less digits than its factorization.

54225005840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677812586 (or 677812580 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

The spelling of 54225005840 in words is "fifty-four billion, two hundred twenty-five million, five thousand, eight hundred forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 677812573 1355625146 2711250292 3389062865 5422500584 6778125730 10845001168 13556251460 27112502920 54225005840