561285843 has 8 divisors (see below), whose sum is σ = 748491408. Its totient is φ = 374135424.

The previous prime is 561285811. The next prime is 561285853. The reversal of 561285843 is 348582165.

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

It is not a de Polignac number, because 561285843 - 2⁵ = 561285811 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 561285795 and 561285804.

It is not an unprimeable number, because it can be changed into a prime (561285853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28471 + ... + 43967.

It is an arithmetic number, because the mean of its divisors is an integer number (93561426).

Almost surely, 2^561285843 is an apocalyptic number.

561285843 is a deficient number, since it is larger than the sum of its proper divisors (187205565).

561285843 is a wasteful number, since it uses less digits than its factorization.

561285843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27573.

The product of its digits is 230400, while the sum is 42.

The square root of 561285843 is about 23691.4719466731. The cubic root of 561285843 is about 824.8874498435.

The spelling of 561285843 in words is "five hundred sixty-one million, two hundred eighty-five thousand, eight hundred forty-three".