2050561800 has 432 divisors, whose sum is σ = 8153786160. Its totient is φ = 460373760.

The previous prime is 2050561781. The next prime is 2050561829. The reversal of 2050561800 is 81650502.

2050561800 is a `hidden beast` number, since 20 + 5 + 0 + 561 + 80 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 5909227 + ... + 5909573.

It is an arithmetic number, because the mean of its divisors is an integer number (18874505).

Almost surely, 2^2050561800 is an apocalyptic number.

2050561800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2050561800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4076893080).

2050561800 is an abundant number, since it is smaller than the sum of its proper divisors (6103224360).

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

2050561800 is a wasteful number, since it uses less digits than its factorization.

2050561800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2050561800 is about 45283.1293088276. The cubic root of 2050561800 is about 1270.4501266765.

The spelling of 2050561800 in words is "two billion, fifty million, five hundred sixty-one thousand, eight hundred".