545542243 has 2 divisors, whose sum is σ = 545542244. Its totient is φ = 545542242.

The previous prime is 545542237. The next prime is 545542253. The reversal of 545542243 is 342245545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545542243 - 2²⁹ = 8671331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 545542199 and 545542208.

It is not a weakly prime, because it can be changed into another prime (545542253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272771121 + 272771122.

It is an arithmetic number, because the mean of its divisors is an integer number (272771122).

Almost surely, 2^545542243 is an apocalyptic number.

545542243 is a deficient number, since it is larger than the sum of its proper divisors (1).

545542243 is an equidigital number, since it uses as much as digits as its factorization.

545542243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96000, while the sum is 34.

The square root of 545542243 is about 23356.8457416664. The cubic root of 545542243 is about 817.1017268375.

Adding to 545542243 its reverse (342245545), we get a palindrome (887787788).

The spelling of 545542243 in words is "five hundred forty-five million, five hundred forty-two thousand, two hundred forty-three".