561844850 has 48 divisors (see below), whose sum is σ = 1196756736. Its totient is φ = 192240000.

The previous prime is 561844847. The next prime is 561844867. The reversal of 561844850 is 58448165.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 561844798 and 561844807.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209015 + ... + 211685.

It is an arithmetic number, because the mean of its divisors is an integer number (24932432).

Almost surely, 2^561844850 is an apocalyptic number.

561844850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

561844850 is an abundant number, since it is smaller than the sum of its proper divisors (634911886).

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

561844850 is a wasteful number, since it uses less digits than its factorization.

561844850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291 (or 3286 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 561844850 is about 23703.2666525102. The cubic root of 561844850 is about 825.1612051070.

The spelling of 561844850 in words is "five hundred sixty-one million, eight hundred forty-four thousand, eight hundred fifty".