545205289 has 2 divisors, whose sum is σ = 545205290. Its totient is φ = 545205288.

The previous prime is 545205257. The next prime is 545205319. The reversal of 545205289 is 982502545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 540330025 + 4875264 = 23245^2 + 2208^2 .

It is a cyclic number.

It is not a de Polignac number, because 545205289 - 2⁵ = 545205257 is a prime.

It is not a weakly prime, because it can be changed into another prime (545205889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272602644 + 272602645.

It is an arithmetic number, because the mean of its divisors is an integer number (272602645).

Almost surely, 2^545205289 is an apocalyptic number.

It is an amenable number.

545205289 is a deficient number, since it is larger than the sum of its proper divisors (1).

545205289 is an equidigital number, since it uses as much as digits as its factorization.

545205289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 545205289 is about 23349.6314531943. The cubic root of 545205289 is about 816.9334646463.

The spelling of 545205289 in words is "five hundred forty-five million, two hundred five thousand, two hundred eighty-nine".