545507 has 4 divisors (see below), whose sum is σ = 563136. Its totient is φ = 527880.

The previous prime is 545497. The next prime is 545521. The reversal of 545507 is 705545.

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

It is a cyclic number.

It is not a de Polignac number, because 545507 - 2⁶ = 545443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8768 + ... + 8829.

It is an arithmetic number, because the mean of its divisors is an integer number (140784).

2⁵⁴⁵⁵⁰⁷ is an apocalyptic number.

545507 is a deficient number, since it is larger than the sum of its proper divisors (17629).

545507 is a wasteful number, since it uses less digits than its factorization.

545507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17628.

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 545507 is about 738.5844569174. The cubic root of 545507 is about 81.7084131050.

The spelling of 545507 in words is "five hundred forty-five thousand, five hundred seven".