561105600 has 168 divisors, whose sum is σ = 2008436928. Its totient is φ = 136012800.

The previous prime is 561105569. The next prime is 561105607. The reversal of 561105600 is 6501165.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (561105607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47487 + ... + 58113.

Almost surely, 2^561105600 is an apocalyptic number.

561105600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561105600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1004218464).

561105600 is an abundant number, since it is smaller than the sum of its proper divisors (1447331328).

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

561105600 is a wasteful number, since it uses less digits than its factorization.

561105600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10663 (or 10648 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 561105600 is about 23687.6676775068. The cubic root of 561105600 is about 824.7991430219.

Adding to 561105600 its reverse (6501165), we get a palindrome (567606765).

The spelling of 561105600 in words is "five hundred sixty-one million, one hundred five thousand, six hundred".