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55088143 = 1117973037
BaseRepresentation
bin1101001000100…
…1010000001111
310211122202201121
43102021100033
5103100310033
65244421411
71236145555
oct322112017
9124582647
1055088143
11291065a0
1216547867
13b54a346
14745dbd5
154c8262d
hex348940f

55088143 has 16 divisors (see below), whose sum is σ = 64308384. Its totient is φ = 46632960.

The previous prime is 55088141. The next prime is 55088161. The reversal of 55088143 is 34188055.

It is not a de Polignac number, because 55088143 - 21 = 55088141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55088099 and 55088108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55088141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16621 + ... + 19657.

It is an arithmetic number, because the mean of its divisors is an integer number (4019274).

Almost surely, 255088143 is an apocalyptic number.

55088143 is a deficient number, since it is larger than the sum of its proper divisors (9220241).

55088143 is a wasteful number, since it uses less digits than its factorization.

55088143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 55088143 is about 7422.1387079467. The cubic root of 55088143 is about 380.4982913684.

The spelling of 55088143 in words is "fifty-five million, eighty-eight thousand, one hundred forty-three".

Divisors: 1 11 17 97 187 1067 1649 3037 18139 33407 51629 294589 567919 3240479 5008013 55088143