561227849 has 16 divisors (see below), whose sum is σ = 691299840. Its totient is φ = 443689920.

The previous prime is 561227839. The next prime is 561227861. The reversal of 561227849 is 948722165.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 561227849 - 2²⁰ = 560179273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561227809) 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 15 ways as a sum of consecutive naturals, for example, 208784 + ... + 211454.

It is an arithmetic number, because the mean of its divisors is an integer number (43206240).

Almost surely, 2^561227849 is an apocalyptic number.

It is an amenable number.

561227849 is a deficient number, since it is larger than the sum of its proper divisors (130071991).

561227849 is a wasteful number, since it uses less digits than its factorization.

561227849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000.

The product of its digits is 241920, while the sum is 44.

The square root of 561227849 is about 23690.2479725308. The cubic root of 561227849 is about 824.8590387876.

The spelling of 561227849 in words is "five hundred sixty-one million, two hundred twenty-seven thousand, eight hundred forty-nine".