4521604 has 12 divisors (see below), whose sum is σ = 7955164. Its totient is φ = 2248704.

The previous prime is 4521599. The next prime is 4521607. The reversal of 4521604 is 4061254.

It can be written as a sum of positive squares in 2 ways, for example, as 2883204 + 1638400 = 1698^2 + 1280^2 .

It is not an unprimeable number, because it can be changed into a prime (4521607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2157 + ... + 3700.

Almost surely, 2^4521604 is an apocalyptic number.

It is an amenable number.

4521604 is a deficient number, since it is larger than the sum of its proper divisors (3433560).

4521604 is a wasteful number, since it uses less digits than its factorization.

4521604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054 (or 6052 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 4521604 is about 2126.4063581545. The cubic root of 4521604 is about 165.3601438629.

Adding to 4521604 its reverse (4061254), we get a palindrome (8582858).

The spelling of 4521604 in words is "four million, five hundred twenty-one thousand, six hundred four".