561241441 has 4 divisors (see below), whose sum is σ = 561288852. Its totient is φ = 561194032.

The previous prime is 561241411. The next prime is 561241459. The reversal of 561241441 is 144142165.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 144142165 = 5 ⋅28828433.

It can be written as a sum of positive squares in 2 ways, for example, as 222129216 + 339112225 = 14904^2 + 18415^2 .

It is a cyclic number.

It is not a de Polignac number, because 561241441 - 2¹⁵ = 561208673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561241411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10611 + ... + 35143.

It is an arithmetic number, because the mean of its divisors is an integer number (140322213).

Almost surely, 2^561241441 is an apocalyptic number.

It is an amenable number.

561241441 is a deficient number, since it is larger than the sum of its proper divisors (47411).

561241441 is a wasteful number, since it uses less digits than its factorization.

561241441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47410.

The product of its digits is 3840, while the sum is 28.

The square root of 561241441 is about 23690.5348398891. The cubic root of 561241441 is about 824.8656976360.

The spelling of 561241441 in words is "five hundred sixty-one million, two hundred forty-one thousand, four hundred forty-one".