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54500243 = 77785749
BaseRepresentation
bin1100111111100…
…1101110010011
310210112220021112
43033321232103
5102423001433
65224043535
71231146560
oct317715623
9123486245
1054500243
1128844926
12163035ab
13b3a2885
147349867
154bb8348
hex33f9b93

54500243 has 4 divisors (see below), whose sum is σ = 62286000. Its totient is φ = 46714488.

The previous prime is 54500219. The next prime is 54500269. The reversal of 54500243 is 34200545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34200545 = 56840109.

It is a cyclic number.

It is not a de Polignac number, because 54500243 - 28 = 54499987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54500273) 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, 3892868 + ... + 3892881.

It is an arithmetic number, because the mean of its divisors is an integer number (15571500).

Almost surely, 254500243 is an apocalyptic number.

54500243 is a deficient number, since it is larger than the sum of its proper divisors (7785757).

54500243 is an equidigital number, since it uses as much as digits as its factorization.

54500243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7785756.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 54500243 is about 7382.4279881351. The cubic root of 54500243 is about 379.1398898344.

Adding to 54500243 its reverse (34200545), we get a palindrome (88700788).

The spelling of 54500243 in words is "fifty-four million, five hundred thousand, two hundred forty-three".

Divisors: 1 7 7785749 54500243