4522518 has 96 divisors (see below), whose sum is σ = 13208832. Its totient is φ = 1080000.

The previous prime is 4522517. The next prime is 4522523. The reversal of 4522518 is 8152254.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4522491 and 4522500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4522517) 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 47 ways as a sum of consecutive naturals, for example, 17893 + ... + 18143.

It is an arithmetic number, because the mean of its divisors is an integer number (137592).

Almost surely, 2^4522518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4522518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6604416).

4522518 is an abundant number, since it is smaller than the sum of its proper divisors (8686314).

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

4522518 is a wasteful number, since it uses less digits than its factorization.

4522518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 287 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 4522518 is about 2126.6212638832. The cubic root of 4522518 is about 165.3712851149.

The spelling of 4522518 in words is "four million, five hundred twenty-two thousand, five hundred eighteen".