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55230056865 = 3252574775621
BaseRepresentation
bin110011011011111101…
…111100100110100001
312021120002002120212200
4303123331330212201
51401102343304430
641212231443413
73663436510644
oct633375744641
9167502076780
1055230056865
1121471a221a5
12a854526569
13529247a729
14295d199a5b
151683ae1460
hexcdbf7c9a1

55230056865 has 24 divisors (see below), whose sum is σ = 96104617128. Its totient is φ = 29341409280.

The previous prime is 55230056803. The next prime is 55230056897. The reversal of 55230056865 is 56865003255.

55230056865 is a `hidden beast` number, since 5 + 5 + 23 + 0 + 0 + 568 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18292292001 + 36937764864 = 135249^2 + 192192^2 .

It is not a de Polignac number, because 55230056865 - 215 = 55230024097 is a prime.

It is a super-2 number, since 2×552300568652 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55230056865.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2376246 + ... + 2399375.

It is an arithmetic number, because the mean of its divisors is an integer number (4004359047).

Almost surely, 255230056865 is an apocalyptic number.

It is an amenable number.

55230056865 is a deficient number, since it is larger than the sum of its proper divisors (40874560263).

55230056865 is a wasteful number, since it uses less digits than its factorization.

55230056865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775889 (or 4775886 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 55230056865 in words is "fifty-five billion, two hundred thirty million, fifty-six thousand, eight hundred sixty-five".

Divisors: 1 3 5 9 15 45 257 771 1285 2313 3855 11565 4775621 14326863 23878105 42980589 71634315 214902945 1227334597 3682003791 6136672985 11046011373 18410018955 55230056865