543609 has 36 divisors (see below), whose sum is σ = 957840. Its totient is φ = 293760.

The previous prime is 543607. The next prime is 543611. The reversal of 543609 is 906345.

It is a happy number.

543609 is a `hidden beast` number, since 54 + 3 + 609 = 666.

543609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (543607) and next prime (543611).

It is not a de Polignac number, because 543609 - 2¹ = 543607 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 5⁵ + 4⁵ + 6⁵ + 3⁵ + 0 + 9⁶ .

543609 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 543609.

It is not an unprimeable number, because it can be changed into a prime (543601) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28602 + ... + 28620.

2⁵⁴³⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

543609 is a deficient number, since it is larger than the sum of its proper divisors (414231).

543609 is a wasteful number, since it uses less digits than its factorization.

543609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 543609 is about 737.2984470348. The cubic root of 543609 is about 81.6135394200.

It can be divided in two parts, 54 and 3609, that added together give a palindrome (3663).

The spelling of 543609 in words is "five hundred forty-three thousand, six hundred nine".