561722300 has 36 divisors (see below), whose sum is σ = 1221859296. Its totient is φ = 224150400.

The previous prime is 561722267. The next prime is 561722309. The reversal of 561722300 is 3227165.

It is a self number, because there is not a number n which added to its sum of digits gives 561722300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561722309) 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 11 ways as a sum of consecutive naturals, for example, 36584 + ... + 49616.

It is an arithmetic number, because the mean of its divisors is an integer number (33940536).

Almost surely, 2^561722300 is an apocalyptic number.

561722300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

561722300 is an abundant number, since it is smaller than the sum of its proper divisors (660136996).

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

561722300 is a wasteful number, since it uses less digits than its factorization.

561722300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13478 (or 13471 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 561722300 is about 23700.6814248030. The cubic root of 561722300 is about 825.1012058272.

Adding to 561722300 its reverse (3227165), we get a palindrome (564949465).

The spelling of 561722300 in words is "five hundred sixty-one million, seven hundred twenty-two thousand, three hundred".