561500117 has 32 divisors (see below), whose sum is σ = 623185920. Its totient is φ = 504483840.

The previous prime is 561500099. The next prime is 561500119. The reversal of 561500117 is 711005165.

It is a cyclic number.

It is not a de Polignac number, because 561500117 - 2¹⁴ = 561483733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561500119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4098473 + ... + 4098609.

It is an arithmetic number, because the mean of its divisors is an integer number (19474560).

Almost surely, 2^561500117 is an apocalyptic number.

It is an amenable number.

561500117 is a deficient number, since it is larger than the sum of its proper divisors (61685803).

561500117 is a wasteful number, since it uses less digits than its factorization.

561500117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 561500117 is about 23695.9936909175. The cubic root of 561500117 is about 824.9924049500.

The spelling of 561500117 in words is "five hundred sixty-one million, five hundred thousand, one hundred seventeen".