561641130 has 96 divisors (see below), whose sum is σ = 1508367744. Its totient is φ = 144885888.

The previous prime is 561641107. The next prime is 561641137. The reversal of 561641130 is 31146165.

561641130 is a `hidden beast` number, since 5 + 6 + 1 + 641 + 13 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 561641094 and 561641103.

It is not an unprimeable number, because it can be changed into a prime (561641137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 755539 + ... + 756281.

It is an arithmetic number, because the mean of its divisors is an integer number (15712164).

Almost surely, 2^561641130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561641130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754183872).

561641130 is an abundant number, since it is smaller than the sum of its proper divisors (946726614).

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

561641130 is a wasteful number, since it uses less digits than its factorization.

561641130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020 (or 1017 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 561641130 is about 23698.9689649149. The cubic root of 561641130 is about 825.0614609859.

Adding to 561641130 its reverse (31146165), we get a palindrome (592787295).

The spelling of 561641130 in words is "five hundred sixty-one million, six hundred forty-one thousand, one hundred thirty".