4500540 has 72 divisors (see below), whose sum is σ = 14899248. Its totient is φ = 1090560.

The previous prime is 4500493. The next prime is 4500541. The reversal of 4500540 is 450054.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4500541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 844 + ... + 3116.

It is an arithmetic number, because the mean of its divisors is an integer number (206934).

Almost surely, 2^4500540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4500540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7449624).

4500540 is an abundant number, since it is smaller than the sum of its proper divisors (10398708).

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

4500540 is a wasteful number, since it uses less digits than its factorization.

4500540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299 (or 2294 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 4500540 is about 2121.4476189621. The cubic root of 4500540 is about 165.1029660351.

Adding to 4500540 its reverse (450054), we get a palindrome (4950594).

The spelling of 4500540 in words is "four million, five hundred thousand, five hundred forty".