545512 has 16 divisors (see below), whose sum is σ = 1116000. Its totient is φ = 247920.

The previous prime is 545497. The next prime is 545521. The reversal of 545512 is 215545.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

545512 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, 3012 + ... + 3187.

It is an arithmetic number, because the mean of its divisors is an integer number (69750).

2⁵⁴⁵⁵¹² is an apocalyptic number.

It is an amenable number.

545512 is an abundant number, since it is smaller than the sum of its proper divisors (570488).

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

545512 is a wasteful number, since it uses less digits than its factorization.

545512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6216 (or 6212 counting only the distinct ones).

The product of its digits is 1000, while the sum is 22.

The square root of 545512 is about 738.5878417629. The cubic root of 545512 is about 81.7086627448.

Subtracting from 545512 its sum of digits (22), we obtain a triangular number (545490 = T₁₀₄₄).

The spelling of 545512 in words is "five hundred forty-five thousand, five hundred twelve".