561556432 has 10 divisors (see below), whose sum is σ = 1088015618. Its totient is φ = 280778208.

The previous prime is 561556421. The next prime is 561556433. The reversal of 561556432 is 234655165.

It can be written as a sum of positive squares in only one way, i.e., 342398016 + 219158416 = 18504^2 + 14804^2 .

It is a junction number, because it is equal to n+sod(n) for n = 561556391 and 561556400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561556433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17548623 + ... + 17548654.

Almost surely, 2^561556432 is an apocalyptic number.

It is an amenable number.

561556432 is a deficient number, since it is larger than the sum of its proper divisors (526459186).

561556432 is a wasteful number, since it uses less digits than its factorization.

561556432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35097285 (or 35097279 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The square root of 561556432 is about 23697.1819421635. The cubic root of 561556432 is about 825.0199845786.

The spelling of 561556432 in words is "five hundred sixty-one million, five hundred fifty-six thousand, four hundred thirty-two".