561288303 has 24 divisors (see below), whose sum is σ = 866799648. Its totient is φ = 348751872.

The previous prime is 561288281. The next prime is 561288317. The reversal of 561288303 is 303882165.

561288303 is a `hidden beast` number, since 5 + 612 + 8 + 8 + 30 + 3 = 666.

561288303 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 561288303 - 2¹⁷ = 561157231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561288323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2050 + ... + 33567.

It is an arithmetic number, because the mean of its divisors is an integer number (36116652).

Almost surely, 2^561288303 is an apocalyptic number.

561288303 is a deficient number, since it is larger than the sum of its proper divisors (305511345).

561288303 is a wasteful number, since it uses less digits than its factorization.

561288303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35743 (or 35740 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 561288303 is about 23691.5238640320. The cubic root of 561288303 is about 824.8886549456. Note that the first 3 decimals are identical.

The spelling of 561288303 in words is "five hundred sixty-one million, two hundred eighty-eight thousand, three hundred three".