4223565 has 24 divisors (see below), whose sum is σ = 7752888. Its totient is φ = 2119680.

The previous prime is 4223563. The next prime is 4223617. The reversal of 4223565 is 5653224.

It can be written as a sum of positive squares in 4 ways, for example, as 514089 + 3709476 = 717^2 + 1926^2 .

It is not a de Polignac number, because 4223565 - 2¹ = 4223563 is a prime.

It is a d-powerful number, because it can be written as 4⁴ + 2¹⁹ + 2²¹ + 3¹³ + 5⁵ + 6⁴ + 5⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1996 + ... + 3525.

It is an arithmetic number, because the mean of its divisors is an integer number (323037).

Almost surely, 2^4223565 is an apocalyptic number.

4223565 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4223565 is a deficient number, since it is larger than the sum of its proper divisors (3529323).

4223565 is a wasteful number, since it uses less digits than its factorization.

4223565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549 (or 5546 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 4223565 is about 2055.1313826615. The cubic root of 4223565 is about 161.6440515832.

Adding to 4223565 its reverse (5653224), we get a palindrome (9876789).

The spelling of 4223565 in words is "four million, two hundred twenty-three thousand, five hundred sixty-five".