2005551040 has 28 divisors (see below), whose sum is σ = 4775719176. Its totient is φ = 802220288.

The previous prime is 2005551029. The next prime is 2005551043. The reversal of 2005551040 is 401555002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005551043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3133354 + ... + 3133993.

Almost surely, 2^2005551040 is an apocalyptic number.

2005551040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2005551040 is an abundant number, since it is smaller than the sum of its proper divisors (2770168136).

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

2005551040 is an equidigital number, since it uses as much as digits as its factorization.

2005551040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6267364 (or 6267354 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 2005551040 is about 44783.3790596467. The cubic root of 2005551040 is about 1261.0856184882.

The spelling of 2005551040 in words is "two billion, five million, five hundred fifty-one thousand, forty".