545320 has 16 divisors (see below), whose sum is σ = 1227060. Its totient is φ = 218112.

The previous prime is 545291. The next prime is 545329. The reversal of 545320 is 23545.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 544644 + 676 = 738^2 + 26^2 .

It is not an unprimeable number, because it can be changed into a prime (545329) 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, 6777 + ... + 6856.

2⁵⁴⁵³²⁰ is an apocalyptic number.

It is an amenable number.

545320 is an abundant number, since it is smaller than the sum of its proper divisors (681740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545320 is a wasteful number, since it uses less digits than its factorization.

545320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13644 (or 13640 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 545320 is about 738.4578525549. The cubic root of 545320 is about 81.6990754799.

Adding to 545320 its reverse (23545), we get a palindrome (568865).

The spelling of 545320 in words is "five hundred forty-five thousand, three hundred twenty".