561323432 has 16 divisors (see below), whose sum is σ = 1061797140. Its totient is φ = 278177536.

The previous prime is 561323407. The next prime is 561323443. The reversal of 561323432 is 234323165.

It can be written as a sum of positive squares in 2 ways, for example, as 559511716 + 1811716 = 23654^2 + 1346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 561323395 and 561323404.

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, 309563 + ... + 311370.

Almost surely, 2^561323432 is an apocalyptic number.

It is an amenable number.

561323432 is a deficient number, since it is larger than the sum of its proper divisors (500473708).

561323432 is a wasteful number, since it uses less digits than its factorization.

561323432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621052 (or 621048 counting only the distinct ones).

The product of its digits is 12960, while the sum is 29.

The square root of 561323432 is about 23692.2652357262. The cubic root of 561323432 is about 824.9058635167.

Adding to 561323432 its reverse (234323165), we get a palindrome (795646597).

The spelling of 561323432 in words is "five hundred sixty-one million, three hundred twenty-three thousand, four hundred thirty-two".