4821565 has 16 divisors (see below), whose sum is σ = 6648192. Its totient is φ = 3288384.

The previous prime is 4821563. The next prime is 4821613. The reversal of 4821565 is 5651284.

It is a cyclic number.

It is not a de Polignac number, because 4821565 - 2¹ = 4821563 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 (4821563) 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 15 ways as a sum of consecutive naturals, for example, 11947 + ... + 12343.

It is an arithmetic number, because the mean of its divisors is an integer number (415512).

Almost surely, 2^4821565 is an apocalyptic number.

It is an amenable number.

4821565 is a deficient number, since it is larger than the sum of its proper divisors (1826627).

4821565 is a wasteful number, since it uses less digits than its factorization.

4821565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its digits is 9600, while the sum is 31.

The square root of 4821565 is about 2195.8062300668. The cubic root of 4821565 is about 168.9387754837.

The spelling of 4821565 in words is "four million, eight hundred twenty-one thousand, five hundred sixty-five".