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144430055 = 57113710139
BaseRepresentation
bin10001001101111…
…01001111100111
3101001202210210022
420212331033213
5243433230210
622155345355
73402430610
oct1046751747
9331683708
10144430055
1174588490
124045225b
1323bcb893
1415278c07
15ca2e155
hex89bd3e7

144430055 has 32 divisors (see below), whose sum is σ = 221944320. Its totient is φ = 87592320.

The previous prime is 144430051. The next prime is 144430073. The reversal of 144430055 is 550034441.

It is not a de Polignac number, because 144430055 - 22 = 144430051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144430051) 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, 9176 + ... + 19314.

It is an arithmetic number, because the mean of its divisors is an integer number (6935760).

Almost surely, 2144430055 is an apocalyptic number.

144430055 is a deficient number, since it is larger than the sum of its proper divisors (77514265).

144430055 is a wasteful number, since it uses less digits than its factorization.

144430055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10199.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 144430055 is about 12017.9055995627. The cubic root of 144430055 is about 524.6695486610.

Adding to 144430055 its reverse (550034441), we get a palindrome (694464496).

The spelling of 144430055 in words is "one hundred forty-four million, four hundred thirty thousand, fifty-five".

Divisors: 1 5 7 11 35 37 55 77 185 259 385 407 1295 2035 2849 10139 14245 50695 70973 111529 354865 375143 557645 780703 1875715 2626001 3903515 4126573 13130005 20632865 28886011 144430055