561906484 has 12 divisors (see below), whose sum is σ = 994385700. Its totient is φ = 277796288.

The previous prime is 561906473. The next prime is 561906487. The reversal of 561906484 is 484609165.

It can be written as a sum of positive squares in 2 ways, for example, as 380250000 + 181656484 = 19500^2 + 13478^2 .

It is a super-2 number, since 2×561906484² = 631477793522484512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561906484.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561906487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788839 + ... + 789550.

It is an arithmetic number, because the mean of its divisors is an integer number (82865475).

Almost surely, 2^561906484 is an apocalyptic number.

It is an amenable number.

561906484 is a deficient number, since it is larger than the sum of its proper divisors (432479216).

561906484 is a wasteful number, since it uses less digits than its factorization.

561906484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578482 (or 1578480 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 561906484 is about 23704.5667330158. The cubic root of 561906484 is about 825.1913772124.

The spelling of 561906484 in words is "five hundred sixty-one million, nine hundred six thousand, four hundred eighty-four".