545066 has 4 divisors (see below), whose sum is σ = 817602. Its totient is φ = 272532.

The previous prime is 545063. The next prime is 545087. The reversal of 545066 is 660545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660545 = 5 ⋅132109.

It can be written as a sum of positive squares in only one way, i.e., 279841 + 265225 = 529^2 + 515^2 .

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 as a sum of consecutive naturals, namely, 136265 + ... + 136268.

2⁵⁴⁵⁰⁶⁶ is an apocalyptic number.

545066 is a deficient number, since it is larger than the sum of its proper divisors (272536).

545066 is a wasteful number, since it uses less digits than its factorization.

545066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272535.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 545066 is about 738.2858524989. The cubic root of 545066 is about 81.6863888691.

The spelling of 545066 in words is "five hundred forty-five thousand, sixty-six".