561340105 has 8 divisors (see below), whose sum is σ = 676500552. Its totient is φ = 447143808.

The previous prime is 561340049. The next prime is 561340121. The reversal of 561340105 is 501043165.

It can be written as a sum of positive squares in 4 ways, for example, as 110754576 + 450585529 = 10524^2 + 21227^2 .

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 561340105 - 2⁹ = 561339593 is a prime.

It is a super-2 number, since 2×561340105² = 630205426962822050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561340105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239754 + ... + 242083.

It is an arithmetic number, because the mean of its divisors is an integer number (84562569).

Almost surely, 2^561340105 is an apocalyptic number.

It is an amenable number.

561340105 is a deficient number, since it is larger than the sum of its proper divisors (115160447).

561340105 is a wasteful number, since it uses less digits than its factorization.

561340105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482075.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 561340105 is about 23692.6170990036. The cubic root of 561340105 is about 824.9140308337.

The spelling of 561340105 in words is "five hundred sixty-one million, three hundred forty thousand, one hundred five".