561522200 has 48 divisors (see below), whose sum is σ = 1374261000. Its totient is φ = 212785920.

The previous prime is 561522191. The next prime is 561522217. The reversal of 561522200 is 2225165.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70085 + ... + 77684.

Almost surely, 2^561522200 is an apocalyptic number.

561522200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

561522200 is an abundant number, since it is smaller than the sum of its proper divisors (812738800).

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

561522200 is a wasteful number, since it uses less digits than its factorization.

561522200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147804 (or 147795 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 561522200 is about 23696.4596511800. The cubic root of 561522200 is about 825.0032200670.

Adding to 561522200 its reverse (2225165), we get a palindrome (563747365).

The spelling of 561522200 in words is "five hundred sixty-one million, five hundred twenty-two thousand, two hundred".