561435223 has 2 divisors, whose sum is σ = 561435224. Its totient is φ = 561435222.

The previous prime is 561435197. The next prime is 561435233. The reversal of 561435223 is 322534165.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561435223 - 2⁵ = 561435191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561435233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280717611 + 280717612.

It is an arithmetic number, because the mean of its divisors is an integer number (280717612).

Almost surely, 2^561435223 is an apocalyptic number.

561435223 is a deficient number, since it is larger than the sum of its proper divisors (1).

561435223 is an equidigital number, since it uses as much as digits as its factorization.

561435223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 31.

The square root of 561435223 is about 23694.6243481512. The cubic root of 561435223 is about 824.9606215670.

Adding to 561435223 its reverse (322534165), we get a palindrome (883969388).

The spelling of 561435223 in words is "five hundred sixty-one million, four hundred thirty-five thousand, two hundred twenty-three".