563221 has 4 divisors (see below), whose sum is σ = 565344. Its totient is φ = 561100.

The previous prime is 563219. The next prime is 563249. The reversal of 563221 is 122365.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122365 = 5 ⋅24473.

It is a cyclic number.

It is not a de Polignac number, because 563221 - 2¹ = 563219 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 (563021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595 + ... + 1216.

It is an arithmetic number, because the mean of its divisors is an integer number (141336).

2⁵⁶³²²¹ is an apocalyptic number.

It is an amenable number.

563221 is a deficient number, since it is larger than the sum of its proper divisors (2123).

563221 is a wasteful number, since it uses less digits than its factorization.

563221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122.

The product of its digits is 360, while the sum is 19.

The square root of 563221 is about 750.4805127383. The cubic root of 563221 is about 82.5834356386.

Adding to 563221 its reverse (122365), we get a palindrome (685586).

It can be divided in two parts, 563 and 221, that added together give a square (784 = 28²).

The spelling of 563221 in words is "five hundred sixty-three thousand, two hundred twenty-one".