2005551043 has 2 divisors, whose sum is σ = 2005551044. Its totient is φ = 2005551042.

The previous prime is 2005551029. The next prime is 2005551073. The reversal of 2005551043 is 3401555002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005551043 - 2⁵ = 2005551011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2005550999 and 2005551017.

It is not a weakly prime, because it can be changed into another prime (2005551073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002775521 + 1002775522.

It is an arithmetic number, because the mean of its divisors is an integer number (1002775522).

Almost surely, 2^2005551043 is an apocalyptic number.

2005551043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005551043 is an equidigital number, since it uses as much as digits as its factorization.

2005551043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 2005551043 is about 44783.3790931412. The cubic root of 2005551043 is about 1261.0856191169.

The spelling of 2005551043 in words is "two billion, five million, five hundred fifty-one thousand, forty-three".