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54120271 = 64184431
BaseRepresentation
bin1100111001110…
…0111101001111
310202211121001111
43032130331033
5102323322041
65211552451
71225005022
oct316347517
9122747044
1054120271
11286053a7
121615b727
13b29b93a
14728b1b9
154b40981
hex339cf4f

54120271 has 4 divisors (see below), whose sum is σ = 54205344. Its totient is φ = 54035200.

The previous prime is 54120259. The next prime is 54120289. The reversal of 54120271 is 17202145.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17202145 = 53440429.

It is a cyclic number.

It is not a de Polignac number, because 54120271 - 215 = 54087503 is a prime.

It is a super-3 number, since 3×541202713 (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54120211) 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 3 ways as a sum of consecutive naturals, for example, 41575 + ... + 42856.

It is an arithmetic number, because the mean of its divisors is an integer number (13551336).

Almost surely, 254120271 is an apocalyptic number.

54120271 is a deficient number, since it is larger than the sum of its proper divisors (85073).

54120271 is an equidigital number, since it uses as much as digits as its factorization.

54120271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85072.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 54120271 is about 7356.6480818373. The cubic root of 54120271 is about 378.2567216429.

The spelling of 54120271 in words is "fifty-four million, one hundred twenty thousand, two hundred seventy-one".

Divisors: 1 641 84431 54120271