545043089 has 2 divisors, whose sum is σ = 545043090. Its totient is φ = 545043088.

The previous prime is 545043049. The next prime is 545043091. The reversal of 545043089 is 980340545.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 464187025 + 80856064 = 21545^2 + 8992^2 .

It is a cyclic number.

It is not a de Polignac number, because 545043089 - 2⁸ = 545042833 is a prime.

Together with 545043091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (545043049) 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, 272521544 + 272521545.

It is an arithmetic number, because the mean of its divisors is an integer number (272521545).

Almost surely, 2^545043089 is an apocalyptic number.

It is an amenable number.

545043089 is a deficient number, since it is larger than the sum of its proper divisors (1).

545043089 is an equidigital number, since it uses as much as digits as its factorization.

545043089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 545043089 is about 23346.1579066021. The cubic root of 545043089 is about 816.8524433300.

The spelling of 545043089 in words is "five hundred forty-five million, forty-three thousand, eighty-nine".