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54550143 = 3222726701
BaseRepresentation
bin1101000000010…
…1111001111111
310210122102201200
43100011321333
5102431101033
65225110543
71231445214
oct320057177
9123572650
1054550143
112887936a
1216328453
13b3bc4bb
14735db0b
154bc8013
hex3405e7f

54550143 has 12 divisors (see below), whose sum is σ = 79144728. Its totient is φ = 36205200.

The previous prime is 54550141. The next prime is 54550151. The reversal of 54550143 is 34105545.

It is not a de Polignac number, because 54550143 - 21 = 54550141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54550141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11308 + ... + 15393.

It is an arithmetic number, because the mean of its divisors is an integer number (6595394).

Almost surely, 254550143 is an apocalyptic number.

54550143 is a deficient number, since it is larger than the sum of its proper divisors (24594585).

54550143 is a wasteful number, since it uses less digits than its factorization.

54550143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26934 (or 26931 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 54550143 is about 7385.8068618127. The cubic root of 54550143 is about 379.2555670519.

Adding to 54550143 its reverse (34105545), we get a palindrome (88655688).

The spelling of 54550143 in words is "fifty-four million, five hundred fifty thousand, one hundred forty-three".

Divisors: 1 3 9 227 681 2043 26701 80103 240309 6061127 18183381 54550143