561117249 has 48 divisors (see below), whose sum is σ = 1069960320. Its totient is φ = 274337280.

The previous prime is 561117229. The next prime is 561117289. The reversal of 561117249 is 942711165.

561117249 is a `hidden beast` number, since 5 + 611 + 17 + 24 + 9 = 666.

It is not a de Polignac number, because 561117249 - 2⁵ = 561117217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561117229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12034 + ... + 35595.

It is an arithmetic number, because the mean of its divisors is an integer number (22290840).

Almost surely, 2^561117249 is an apocalyptic number.

It is an amenable number.

561117249 is a deficient number, since it is larger than the sum of its proper divisors (508843071).

561117249 is a wasteful number, since it uses less digits than its factorization.

561117249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47670 (or 47667 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 561117249 is about 23687.9135636721. The cubic root of 561117249 is about 824.8048508119.

The spelling of 561117249 in words is "five hundred sixty-one million, one hundred seventeen thousand, two hundred forty-nine".