2005550455 has 4 divisors (see below), whose sum is σ = 2406660552. Its totient is φ = 1604440360.

The previous prime is 2005550447. The next prime is 2005550461. The reversal of 2005550455 is 5540555002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2005550455 - 2³ = 2005550447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200555041 + ... + 200555050.

It is an arithmetic number, because the mean of its divisors is an integer number (601665138).

Almost surely, 2^2005550455 is an apocalyptic number.

2005550455 is a deficient number, since it is larger than the sum of its proper divisors (401110097).

2005550455 is an equidigital number, since it uses as much as digits as its factorization.

2005550455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401110096.

The product of its (nonzero) digits is 25000, while the sum is 31.

The square root of 2005550455 is about 44783.3725282052. The cubic root of 2005550455 is about 1261.0854958726.

The spelling of 2005550455 in words is "two billion, five million, five hundred fifty thousand, four hundred fifty-five".