54209543 has 2 divisors, whose sum is σ = 54209544. Its totient is φ = 54209542.

The previous prime is 54209509. The next prime is 54209557. The reversal of 54209543 is 34590245.

It is a happy number.

54209543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54209543 - 2¹⁶ = 54144007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54209443) 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 as a sum of consecutive naturals, namely, 27104771 + 27104772.

It is an arithmetic number, because the mean of its divisors is an integer number (27104772).

Almost surely, 2^54209543 is an apocalyptic number.

54209543 is a deficient number, since it is larger than the sum of its proper divisors (1).

54209543 is an equidigital number, since it uses as much as digits as its factorization.

54209543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 54209543 is about 7362.7130189897. The cubic root of 54209543 is about 378.4645869749.

Adding to 54209543 its reverse (34590245), we get a palindrome (88799788).

The spelling of 54209543 in words is "fifty-four million, two hundred nine thousand, five hundred forty-three".