545812 has 6 divisors (see below), whose sum is σ = 955178. Its totient is φ = 272904.

The previous prime is 545791. The next prime is 545827. The reversal of 545812 is 218545.

It can be written as a sum of positive squares in only one way, i.e., 538756 + 7056 = 734^2 + 84^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

545812 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 as a sum of consecutive naturals, namely, 68223 + ... + 68230.

2⁵⁴⁵⁸¹² is an apocalyptic number.

It is an amenable number.

545812 is a deficient number, since it is larger than the sum of its proper divisors (409366).

545812 is a wasteful number, since it uses less digits than its factorization.

545812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136457 (or 136455 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 545812 is about 738.7909041129. The cubic root of 545812 is about 81.7236383437.

The spelling of 545812 in words is "five hundred forty-five thousand, eight hundred twelve".