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55505050055 = 5713121989121
BaseRepresentation
bin110011101100010110…
…111101100111000111
312022021020112200121122
4303230112331213013
51402133243100210
641255413504155
74003316066240
oct635426754707
9168236480548
1055505050055
11215a31766a4
12a91064205b
1353074311b0
1429878ddcc7
15169cd10b55
hexcec5bd9c7

55505050055 has 16 divisors (see below), whose sum is σ = 81976689984. Its totient is φ = 35132866560.

The previous prime is 55505050039. The next prime is 55505050079. The reversal of 55505050055 is 55005050555.

It is not a de Polignac number, because 55505050055 - 24 = 55505050039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a junction number, because it is equal to n+sod(n) for n = 55505049997 and 55505050024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60994106 + ... + 60995015.

It is an arithmetic number, because the mean of its divisors is an integer number (5123543124).

Almost surely, 255505050055 is an apocalyptic number.

55505050055 is a deficient number, since it is larger than the sum of its proper divisors (26471639929).

55505050055 is a wasteful number, since it uses less digits than its factorization.

55505050055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121989146.

The product of its (nonzero) digits is 78125, while the sum is 35.

It can be divided in two parts, 555050500 and 55, that added together give a palindrome (555050555).

The spelling of 55505050055 in words is "fifty-five billion, five hundred five million, fifty thousand, fifty-five".

Divisors: 1 5 7 13 35 65 91 455 121989121 609945605 853923847 1585858573 4269619235 7929292865 11101010011 55505050055