561253543 has 8 divisors (see below), whose sum is σ = 585334400. Its totient is φ = 537546240.

The previous prime is 561253541. The next prime is 561253571. The reversal of 561253543 is 345352165.

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

It is a cyclic number.

It is not a de Polignac number, because 561253543 - 2¹ = 561253541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561253499 and 561253508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561253541) 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 7 ways as a sum of consecutive naturals, for example, 90318 + ... + 96331.

It is an arithmetic number, because the mean of its divisors is an integer number (73166800).

Almost surely, 2^561253543 is an apocalyptic number.

561253543 is a deficient number, since it is larger than the sum of its proper divisors (24080857).

561253543 is a wasteful number, since it uses less digits than its factorization.

561253543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186777.

The product of its digits is 54000, while the sum is 34.

The square root of 561253543 is about 23690.7902569754. The cubic root of 561253543 is about 824.8716264290.

The spelling of 561253543 in words is "five hundred sixty-one million, two hundred fifty-three thousand, five hundred forty-three".