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55055055005550 = 23252791548665401
BaseRepresentation
bin11001000010010100000001…
…11111110010011101101110
321012221012201102222110011200
430201022000333302131232
524204010223040134200
6313031535413430330
714411411405126445
oct1441120077623556
9235835642873150
1055055055005550
11165a67992a5136
12621205663b3a6
1324948919043b2
14d84970bbdd5c
156571958e5800
hex321280ff276e

55055055005550 has 72 divisors (see below), whose sum is σ = 149786917681440. Its totient is φ = 14495508144000.

The previous prime is 55055055005543. The next prime is 55055055005627. The reversal of 55055055005550 is 5550055055055.

55055055005550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×550550550055502 (a number of 28 digits) contains 22 as substring.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55055055005496 and 55055055005505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 774297151 + ... + 774368250.

Almost surely, 255055055005550 is an apocalyptic number.

55055055005550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55055055005550 is an abundant number, since it is smaller than the sum of its proper divisors (94731862675890).

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

55055055005550 is a wasteful number, since it uses less digits than its factorization.

55055055005550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548665498 (or 1548665490 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 55055055005550 in words is "fifty-five trillion, fifty-five billion, fifty-five million, five thousand, five hundred fifty".

Divisors: 1 2 3 5 6 9 10 15 18 25 30 45 50 75 79 90 150 158 225 237 395 450 474 711 790 1185 1422 1975 2370 3555 3950 5925 7110 11850 17775 35550 1548665401 3097330802 4645996203 7743327005 9291992406 13937988609 15486654010 23229981015 27875977218 38716635025 46459962030 69689943045 77433270050 116149905075 122344566679 139379886090 232299810150 244689133358 348449715225 367033700037 611722833395 696899430450 734067400074 1101101100111 1223445666790 1835168500185 2202202200222 3058614166975 3670337000370 5505505500555 6117228333950 9175842500925 11011011001110 18351685001850 27527527502775 55055055005550