561224 has 24 divisors (see below), whose sum is σ = 1102230. Its totient is φ = 267840.

The previous prime is 561199. The next prime is 561229. The reversal of 561224 is 422165.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 465124 + 96100 = 682^2 + 310^2 .

It is a junction number, because it is equal to n+sod(n) for n = 561196 and 561205.

It is not an unprimeable number, because it can be changed into a prime (561229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7652 + ... + 7724.

2⁵⁶¹²²⁴ is an apocalyptic number.

It is an amenable number.

561224 is a deficient number, since it is larger than the sum of its proper divisors (541006).

561224 is a wasteful number, since it uses less digits than its factorization.

561224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 106 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 561224 is about 749.1488503629. The cubic root of 561224 is about 82.4857153107.

Adding to 561224 its reverse (422165), we get a palindrome (983389).

The spelling of 561224 in words is "five hundred sixty-one thousand, two hundred twenty-four".