561550650 has 24 divisors (see below), whose sum is σ = 1392645984. Its totient is φ = 149746800.

The previous prime is 561550603. The next prime is 561550657. The reversal of 561550650 is 56055165.

It is not an unprimeable number, because it can be changed into a prime (561550657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1871686 + ... + 1871985.

It is an arithmetic number, because the mean of its divisors is an integer number (58026916).

Almost surely, 2^561550650 is an apocalyptic number.

561550650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

561550650 is an abundant number, since it is smaller than the sum of its proper divisors (831095334).

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

561550650 is a wasteful number, since it uses less digits than its factorization.

561550650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743686 (or 3743681 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 561550650 is about 23697.0599442209. The cubic root of 561550650 is about 825.0171529951.

It can be divided in two parts, 5615 and 50650, that added together give a palindrome (56265).

The spelling of 561550650 in words is "five hundred sixty-one million, five hundred fifty thousand, six hundred fifty".