561442343 has 48 divisors (see below), whose sum is σ = 761264640. Its totient is φ = 408240000.

The previous prime is 561442339. The next prime is 561442361. The reversal of 561442343 is 343244165.

It is not a de Polignac number, because 561442343 - 2² = 561442339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561442363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 747218 + ... + 747968.

It is an arithmetic number, because the mean of its divisors is an integer number (15859680).

Almost surely, 2^561442343 is an apocalyptic number.

561442343 is a deficient number, since it is larger than the sum of its proper divisors (199822297).

561442343 is a wasteful number, since it uses less digits than its factorization.

561442343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 861 counting only the distinct ones).

The product of its digits is 34560, while the sum is 32.

The square root of 561442343 is about 23694.7745927240. The cubic root of 561442343 is about 824.9641088763.

The spelling of 561442343 in words is "five hundred sixty-one million, four hundred forty-two thousand, three hundred forty-three".