4521318 has 16 divisors (see below), whose sum is σ = 9075456. Its totient is φ = 1501640.

The previous prime is 4521313. The next prime is 4521331. The reversal of 4521318 is 8131254.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655 + ... + 3077.

It is an arithmetic number, because the mean of its divisors is an integer number (567216).

Almost surely, 2^4521318 is an apocalyptic number.

4521318 is an abundant number, since it is smaller than the sum of its proper divisors (4554138).

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

4521318 is a wasteful number, since it uses less digits than its factorization.

4521318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739.

The product of its digits is 960, while the sum is 24.

The square root of 4521318 is about 2126.3391074803. The cubic root of 4521318 is about 165.3566573422.

It can be divided in two parts, 452 and 1318, that added together give a triangular number (1770 = T₅₉).

The spelling of 4521318 in words is "four million, five hundred twenty-one thousand, three hundred eighteen".