561552806 has 8 divisors (see below), whose sum is σ = 891878040. Its totient is φ = 264260128.

The previous prime is 561552773. The next prime is 561552907. The reversal of 561552806 is 608255165.

561552806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 561552806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8258096 + ... + 8258163.

It is an arithmetic number, because the mean of its divisors is an integer number (111484755).

Almost surely, 2^561552806 is an apocalyptic number.

561552806 is a deficient number, since it is larger than the sum of its proper divisors (330325234).

561552806 is a wasteful number, since it uses less digits than its factorization.

561552806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16516278.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 561552806 is about 23697.1054350526. The cubic root of 561552806 is about 825.0182088421.

The spelling of 561552806 in words is "five hundred sixty-one million, five hundred fifty-two thousand, eight hundred six".