561385799 has 32 divisors (see below), whose sum is σ = 663499200. Its totient is φ = 470292480.

The previous prime is 561385763. The next prime is 561385819. The reversal of 561385799 is 997583165.

It is a cyclic number.

It is not a de Polignac number, because 561385799 - 2²⁰ = 560337223 is a prime.

Its product of digits (2041200) is a multiple of the sum of its prime divisors (675).

It is a self number, because there is not a number n which added to its sum of digits gives 561385799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561385709) 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 31 ways as a sum of consecutive naturals, for example, 1296287 + ... + 1296719.

It is an arithmetic number, because the mean of its divisors is an integer number (20734350).

Almost surely, 2^561385799 is an apocalyptic number.

561385799 is a deficient number, since it is larger than the sum of its proper divisors (102113401).

561385799 is a wasteful number, since it uses less digits than its factorization.

561385799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675.

The product of its digits is 2041200, while the sum is 53.

The square root of 561385799 is about 23693.5813882157. The cubic root of 561385799 is about 824.9364133422.

The spelling of 561385799 in words is "five hundred sixty-one million, three hundred eighty-five thousand, seven hundred ninety-nine".