561552776 has 16 divisors (see below), whose sum is σ = 1055116800. Its totient is φ = 280188304.

The previous prime is 561552773. The next prime is 561552907. The reversal of 561552776 is 677255165.

It is not an unprimeable number, because it can be changed into a prime (561552773) 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, 69440 + ... + 77103.

It is an arithmetic number, because the mean of its divisors is an integer number (65944800).

Almost surely, 2^561552776 is an apocalyptic number.

It is an amenable number.

561552776 is a deficient number, since it is larger than the sum of its proper divisors (493564024).

561552776 is a wasteful number, since it uses less digits than its factorization.

561552776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147028 (or 147024 counting only the distinct ones).

The product of its digits is 441000, while the sum is 44.

The square root of 561552776 is about 23697.1048020639. The cubic root of 561552776 is about 825.0181941503.

The spelling of 561552776 in words is "five hundred sixty-one million, five hundred fifty-two thousand, seven hundred seventy-six".