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55500055051 = 7191992299157
BaseRepresentation
bin110011101100000011…
…111010001000001011
312022020220010220202111
4303230003322020023
51402131003230201
641255114443151
74003225453450
oct635403721013
9168226126674
1055500055051
11215a03748a1
12a90aa334b7
1353063a277c
142986d9d827
15169c675b51
hexcec0fa20b

55500055051 has 32 divisors (see below), whose sum is σ = 67402880000. Its totient is φ = 44640554112.

The previous prime is 55500055049. The next prime is 55500055063. The reversal of 55500055051 is 15055000555.

It is not a de Polignac number, because 55500055051 - 21 = 55500055049 is a prime.

It is a super-2 number, since 2×555000550512 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55500055031) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 6056365 + ... + 6065521.

It is an arithmetic number, because the mean of its divisors is an integer number (2106340000).

Almost surely, 255500055051 is an apocalyptic number.

55500055051 is a deficient number, since it is larger than the sum of its proper divisors (11902824949).

55500055051 is a wasteful number, since it uses less digits than its factorization.

55500055051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9611.

The product of its (nonzero) digits is 15625, while the sum is 31.

The spelling of 55500055051 in words is "fifty-five billion, five hundred million, fifty-five thousand, fifty-one".

Divisors: 1 7 19 133 199 229 1393 1603 3781 4351 9157 26467 30457 45571 64099 173983 318997 865849 1217881 1822243 2096953 6060943 12755701 14678671 34622617 39842107 242358319 278894749 417293647 2921055529 7928579293 55500055051