545548 has 12 divisors (see below), whose sum is σ = 987840. Its totient is φ = 263312.

The previous prime is 545543. The next prime is 545549. The reversal of 545548 is 845545.

It is not an unprimeable number, because it can be changed into a prime (545543) by changing a digit.

545548 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2236 + ... + 2467.

It is an arithmetic number, because the mean of its divisors is an integer number (82320).

2⁵⁴⁵⁵⁴⁸ is an apocalyptic number.

545548 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

545548 is a deficient number, since it is larger than the sum of its proper divisors (442292).

545548 is a wasteful number, since it uses less digits than its factorization.

545548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4736 (or 4734 counting only the distinct ones).

The product of its digits is 16000, while the sum is 31.

The square root of 545548 is about 738.6122121926. The cubic root of 545548 is about 81.7104601065.

The spelling of 545548 in words is "five hundred forty-five thousand, five hundred forty-eight".