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54231143 = 76171263
BaseRepresentation
bin1100111011100…
…0000001100111
310210001020010212
43032320001213
5102340344033
65214210035
71225646201
oct316700147
9123036125
1054231143
112868072a
12161b391b
13b30a245
1472b9771
154b63748
hex33b8067

54231143 has 4 divisors (see below), whose sum is σ = 54303168. Its totient is φ = 54159120.

The previous prime is 54231119. The next prime is 54231161. The reversal of 54231143 is 34113245.

54231143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54231143 - 28 = 54230887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54231103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34871 + ... + 36392.

It is an arithmetic number, because the mean of its divisors is an integer number (13575792).

Almost surely, 254231143 is an apocalyptic number.

54231143 is a deficient number, since it is larger than the sum of its proper divisors (72025).

54231143 is an equidigital number, since it uses as much as digits as its factorization.

54231143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72024.

The product of its digits is 1440, while the sum is 23.

The square root of 54231143 is about 7364.1797234994. The cubic root of 54231143 is about 378.5148471880.

Adding to 54231143 its reverse (34113245), we get a palindrome (88344388).

The spelling of 54231143 in words is "fifty-four million, two hundred thirty-one thousand, one hundred forty-three".

Divisors: 1 761 71263 54231143