545239 has 2 divisors, whose sum is σ = 545240. Its totient is φ = 545238.

The previous prime is 545231. The next prime is 545257. The reversal of 545239 is 932545.

545239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545239 - 2³ = 545231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272619 + 272620.

It is an arithmetic number, because the mean of its divisors is an integer number (272620).

2⁵⁴⁵²³⁹ is an apocalyptic number.

545239 is a deficient number, since it is larger than the sum of its proper divisors (1).

545239 is an equidigital number, since it uses as much as digits as its factorization.

545239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 28.

The square root of 545239 is about 738.4030064944. The cubic root of 545239 is about 81.6950301776.

It can be divided in two parts, 545 and 239, that added together give a square (784 = 28²).

The spelling of 545239 in words is "five hundred forty-five thousand, two hundred thirty-nine".