4522540 has 48 divisors (see below), whose sum is σ = 10561824. Its totient is φ = 1612800.

The previous prime is 4522523. The next prime is 4522549. The reversal of 4522540 is 452254.

4522540 = T₂₀₉ + T₂₁₀ + ... + T₃₃₀.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (4522549) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13252 + ... + 13588.

It is an arithmetic number, because the mean of its divisors is an integer number (220038).

Almost surely, 2^4522540 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 4522540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5280912).

4522540 is an abundant number, since it is smaller than the sum of its proper divisors (6039284).

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

4522540 is a wasteful number, since it uses less digits than its factorization.

4522540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 4522540 is about 2126.6264364011. The cubic root of 4522540 is about 165.3715532666.

Adding to 4522540 its reverse (452254), we get a palindrome (4974794).

It can be divided in two parts, 452 and 2540, that added together give a palindrome (2992).

The spelling of 4522540 in words is "four million, five hundred twenty-two thousand, five hundred forty".