2005550440 has 32 divisors (see below), whose sum is σ = 4515840000. Its totient is φ = 801624384.

The previous prime is 2005550431. The next prime is 2005550447. The reversal of 2005550440 is 440555002.

2005550440 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2005550447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38041 + ... + 73879.

It is an arithmetic number, because the mean of its divisors is an integer number (141120000).

Almost surely, 2^2005550440 is an apocalyptic number.

2005550440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2005550440 is an abundant number, since it is smaller than the sum of its proper divisors (2510289560).

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

2005550440 is a wasteful number, since it uses less digits than its factorization.

2005550440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37249 (or 37245 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 2005550440 is about 44783.3723607323. The cubic root of 2005550440 is about 1261.0854927286.

The spelling of 2005550440 in words is "two billion, five million, five hundred fifty thousand, four hundred forty".