545131243 has 2 divisors, whose sum is σ = 545131244. Its totient is φ = 545131242.

The previous prime is 545131199. The next prime is 545131271. The reversal of 545131243 is 342131545.

545131243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (545131271) can be obtained adding 545131243 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 545131243 - 2¹⁷ = 545000171 is a prime.

It is not a weakly prime, because it can be changed into another prime (545131273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272565621 + 272565622.

It is an arithmetic number, because the mean of its divisors is an integer number (272565622).

Almost surely, 2^545131243 is an apocalyptic number.

545131243 is a deficient number, since it is larger than the sum of its proper divisors (1).

545131243 is an equidigital number, since it uses as much as digits as its factorization.

545131243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 28.

The square root of 545131243 is about 23348.0458068764. The cubic root of 545131243 is about 816.8964795600.

Adding to 545131243 its reverse (342131545), we get a palindrome (887262788).

The spelling of 545131243 in words is "five hundred forty-five million, one hundred thirty-one thousand, two hundred forty-three".