561228168 has 32 divisors (see below), whose sum is σ = 1412496000. Its totient is φ = 185819328.

The previous prime is 561228163. The next prime is 561228203. The reversal of 561228168 is 861822165.

It is not an unprimeable number, because it can be changed into a prime (561228163) 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 7 ways as a sum of consecutive naturals, for example, 74896 + ... + 82047.

It is an arithmetic number, because the mean of its divisors is an integer number (44140500).

Almost surely, 2^561228168 is an apocalyptic number.

It is an amenable number.

561228168 is an abundant number, since it is smaller than the sum of its proper divisors (851267832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561228168 is a wasteful number, since it uses less digits than its factorization.

561228168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157101 (or 157097 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 561228168 is about 23690.2547052580. The cubic root of 561228168 is about 824.8591950699.

The spelling of 561228168 in words is "five hundred sixty-one million, two hundred twenty-eight thousand, one hundred sixty-eight".