5223665 has 4 divisors (see below), whose sum is σ = 6268404. Its totient is φ = 4178928.

The previous prime is 5223649. The next prime is 5223671. The reversal of 5223665 is 5663225.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1227664 + 3996001 = 1108^2 + 1999^2 .

It is a cyclic number.

It is not a de Polignac number, because 5223665 - 2⁴ = 5223649 is a prime.

It is a d-powerful number, because it can be written as 5² + 2¹⁸ + 2²⁰ + 3⁵ + 6⁷ + 6⁸ + 5⁹ .

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522362 + ... + 522371.

It is an arithmetic number, because the mean of its divisors is an integer number (1567101).

Almost surely, 2^5223665 is an apocalyptic number.

It is an amenable number.

5223665 is a deficient number, since it is larger than the sum of its proper divisors (1044739).

5223665 is a wasteful number, since it uses less digits than its factorization.

5223665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044738.

The product of its digits is 10800, while the sum is 29.

The square root of 5223665 is about 2285.5338544856. The cubic root of 5223665 is about 173.5102381100.

The spelling of 5223665 in words is "five million, two hundred twenty-three thousand, six hundred sixty-five".