545228 has 12 divisors (see below), whose sum is σ = 985152. Its totient is φ = 263760.

The previous prime is 545213. The next prime is 545231. The reversal of 545228 is 822545.

It is a junction number, because it is equal to n+sod(n) for n = 545197 and 545206.

It is an unprimeable number.

545228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075 + ... + 2322.

It is an arithmetic number, because the mean of its divisors is an integer number (82096).

2⁵⁴⁵²²⁸ is an apocalyptic number.

It is an amenable number.

545228 is a deficient number, since it is larger than the sum of its proper divisors (439924).

545228 is a wasteful number, since it uses less digits than its factorization.

545228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432 (or 4430 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 545228 is about 738.3955579498. The cubic root of 545228 is about 81.6944807847.

The spelling of 545228 in words is "five hundred forty-five thousand, two hundred twenty-eight".