545065 has 4 divisors (see below), whose sum is σ = 654084. Its totient is φ = 436048.

The previous prime is 545063. The next prime is 545087. The reversal of 545065 is 560545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 326041 + 219024 = 571^2 + 468^2 .

It is a cyclic number.

It is not a de Polignac number, because 545065 - 2¹ = 545063 is a prime.

It is a Duffinian number.

545065 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (545063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54502 + ... + 54511.

It is an arithmetic number, because the mean of its divisors is an integer number (163521).

2⁵⁴⁵⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

545065 is a deficient number, since it is larger than the sum of its proper divisors (109019).

545065 is a wasteful number, since it uses less digits than its factorization.

545065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109018.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 545065 is about 738.2851752541. The cubic root of 545065 is about 81.6863389140.

The spelling of 545065 in words is "five hundred forty-five thousand, sixty-five".