561600550 has 24 divisors (see below), whose sum is σ = 1193803056. Its totient is φ = 192548640.

The previous prime is 561600503. The next prime is 561600551. The reversal of 561600550 is 55006165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561600551) 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 11 ways as a sum of consecutive naturals, for example, 801937 + ... + 802636.

It is an arithmetic number, because the mean of its divisors is an integer number (49741794).

Almost surely, 2^561600550 is an apocalyptic number.

561600550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

561600550 is an abundant number, since it is smaller than the sum of its proper divisors (632202506).

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

561600550 is a wasteful number, since it uses less digits than its factorization.

561600550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604592 (or 1604587 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 561600550 is about 23698.1127940602. The cubic root of 561600550 is about 825.0415895777.

The spelling of 561600550 in words is "five hundred sixty-one million, six hundred thousand, five hundred fifty".