545000 has 40 divisors (see below), whose sum is σ = 1288650. Its totient is φ = 216000.

The previous prime is 544979. The next prime is 545023. The reversal of 545000 is 545.

545000 = T₂₀₁ + T₂₀₂ + ... + T₂₂₄.

It can be written as a sum of positive squares in 5 ways, for example, as 23716 + 521284 = 154^2 + 722^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a plaindrome in base 12.

It is an unprimeable 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 9 ways as a sum of consecutive naturals, for example, 4946 + ... + 5054.

2⁵⁴⁵⁰⁰⁰ is an apocalyptic number.

545000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644325).

545000 is an abundant number, since it is smaller than the sum of its proper divisors (743650).

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

545000 is a wasteful number, since it uses less digits than its factorization.

545000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 545000 is about 738.2411530117. The cubic root of 545000 is about 81.6830917030.

Adding to 545000 its reverse (545), we get a palindrome (545545).

545000 divided by its reverse (545) gives a cube (1000 = 10³).

The spelling of 545000 in words is "five hundred forty-five thousand".