561217107 has 32 divisors (see below), whose sum is σ = 869266944. Its totient is φ = 318297600.

The previous prime is 561217103. The next prime is 561217109. The reversal of 561217107 is 701712165.

It is not a de Polignac number, because 561217107 - 2² = 561217103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561217103) 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 31 ways as a sum of consecutive naturals, for example, 98778 + ... + 104304.

It is an arithmetic number, because the mean of its divisors is an integer number (27164592).

Almost surely, 2^561217107 is an apocalyptic number.

561217107 is a deficient number, since it is larger than the sum of its proper divisors (308049837).

561217107 is a wasteful number, since it uses less digits than its factorization.

561217107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5739.

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 561217107 is about 23690.0212536840. The cubic root of 561217107 is about 824.8537761049.

The spelling of 561217107 in words is "five hundred sixty-one million, two hundred seventeen thousand, one hundred seven".