561448242 has 12 divisors (see below), whose sum is σ = 1216471230. Its totient is φ = 187149408.

The previous prime is 561448211. The next prime is 561448247. The reversal of 561448242 is 242844165.

It can be written as a sum of positive squares in only one way, i.e., 553613841 + 7834401 = 23529^2 + 2799^2 .

It is a junction number, because it is equal to n+sod(n) for n = 561448197 and 561448206.

It is not an unprimeable number, because it can be changed into a prime (561448247) 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 5 ways as a sum of consecutive naturals, for example, 15595767 + ... + 15595802.

Almost surely, 2^561448242 is an apocalyptic number.

561448242 is an abundant number, since it is smaller than the sum of its proper divisors (655022988).

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

561448242 is a wasteful number, since it uses less digits than its factorization.

561448242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31191577 (or 31191574 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 561448242 is about 23694.8990713191. The cubic root of 561448242 is about 824.9669981289.

The spelling of 561448242 in words is "five hundred sixty-one million, four hundred forty-eight thousand, two hundred forty-two".