561226 has 4 divisors (see below), whose sum is σ = 841842. Its totient is φ = 280612.

The previous prime is 561199. The next prime is 561229. The reversal of 561226 is 622165.

561226 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 622165 = 5 ⋅124433.

It can be written as a sum of positive squares in only one way, i.e., 561001 + 225 = 749^2 + 15^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 561197 and 561206.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140305 + ... + 140308.

2⁵⁶¹²²⁶ is an apocalyptic number.

561226 is a deficient number, since it is larger than the sum of its proper divisors (280616).

561226 is a wasteful number, since it uses less digits than its factorization.

561226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280615.

The product of its digits is 720, while the sum is 22.

The square root of 561226 is about 749.1501852099. The cubic root of 561226 is about 82.4858132937.

It can be divided in two parts, 561 and 226, that added together give a palindrome (787).

The spelling of 561226 in words is "five hundred sixty-one thousand, two hundred twenty-six".