4521365 has 8 divisors (see below), whose sum is σ = 5450328. Its totient is φ = 3600640.

The previous prime is 4521359. The next prime is 4521367. The reversal of 4521365 is 5631254.

It can be written as a sum of positive squares in 4 ways, for example, as 232324 + 4289041 = 482^2 + 2071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4521365 - 2⁶ = 4521301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521367) 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, 776 + ... + 3105.

It is an arithmetic number, because the mean of its divisors is an integer number (681291).

Almost surely, 2^4521365 is an apocalyptic number.

It is an amenable number.

4521365 is a deficient number, since it is larger than the sum of its proper divisors (928963).

4521365 is a wasteful number, since it uses less digits than its factorization.

4521365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119.

The product of its digits is 3600, while the sum is 26.

The square root of 4521365 is about 2126.3501593105. The cubic root of 4521365 is about 165.3572303120.

The spelling of 4521365 in words is "four million, five hundred twenty-one thousand, three hundred sixty-five".