561340361 has 8 divisors (see below), whose sum is σ = 583813824. Its totient is φ = 539295120.

The previous prime is 561340321. The next prime is 561340387. The reversal of 561340361 is 163043165.

It is a happy number.

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 561340361 - 2¹⁴ = 561323977 is a prime.

It is a super-2 number, since 2×561340361² = 630206001775220642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561340321) 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 7 ways as a sum of consecutive naturals, for example, 104381 + ... + 109626.

It is an arithmetic number, because the mean of its divisors is an integer number (72976728).

Almost surely, 2^561340361 is an apocalyptic number.

It is an amenable number.

561340361 is a deficient number, since it is larger than the sum of its proper divisors (22473463).

561340361 is a wasteful number, since it uses less digits than its factorization.

561340361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214111.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 561340361 is about 23692.6225015299. The cubic root of 561340361 is about 824.9141562348.

The spelling of 561340361 in words is "five hundred sixty-one million, three hundred forty thousand, three hundred sixty-one".