4543540 has 12 divisors (see below), whose sum is σ = 9541476. Its totient is φ = 1817408.

The previous prime is 4543523. The next prime is 4543543. The reversal of 4543540 is 453454.

It can be written as a sum of positive squares in 2 ways, for example, as 2683044 + 1860496 = 1638^2 + 1364^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4543543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113569 + ... + 113608.

It is an arithmetic number, because the mean of its divisors is an integer number (795123).

Almost surely, 2^4543540 is an apocalyptic number.

It is an amenable number.

4543540 is an abundant number, since it is smaller than the sum of its proper divisors (4997936).

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

4543540 is a wasteful number, since it uses less digits than its factorization.

4543540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227186 (or 227184 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 4543540 is about 2131.5581155577. The cubic root of 4543540 is about 165.6271206564.

Adding to 4543540 its reverse (453454), we get a palindrome (4996994).

The spelling of 4543540 in words is "four million, five hundred forty-three thousand, five hundred forty".