561630433 has 12 divisors (see below), whose sum is σ = 695036928. Its totient is φ = 444366000.

The previous prime is 561630409. The next prime is 561630463. The reversal of 561630433 is 334036165.

561630433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561630433 - 2¹⁷ = 561499361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561630395 and 561630404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561630463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236193 + ... + 238558.

It is an arithmetic number, because the mean of its divisors is an integer number (57919744).

Almost surely, 2^561630433 is an apocalyptic number.

It is an amenable number.

561630433 is a deficient number, since it is larger than the sum of its proper divisors (133406495).

561630433 is a wasteful number, since it uses less digits than its factorization.

561630433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474784 (or 474771 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 561630433 is about 23698.7432789167. The cubic root of 561630433 is about 825.0562229207.

Adding to 561630433 its reverse (334036165), we get a palindrome (895666598).

The spelling of 561630433 in words is "five hundred sixty-one million, six hundred thirty thousand, four hundred thirty-three".