2005355217 has 8 divisors (see below), whose sum is σ = 2674504224. Its totient is φ = 1336554848.

The previous prime is 2005355203. The next prime is 2005355237. The reversal of 2005355217 is 7125535002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2005355217 - 2⁶ = 2005355153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2005355237) 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 in 7 ways as a sum of consecutive naturals, for example, 73428 + ... + 96965.

It is an arithmetic number, because the mean of its divisors is an integer number (334313028).

Almost surely, 2^2005355217 is an apocalyptic number.

It is an amenable number.

2005355217 is a deficient number, since it is larger than the sum of its proper divisors (669149007).

2005355217 is a wasteful number, since it uses less digits than its factorization.

2005355217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174319.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 2005355217 is about 44781.1926705844. The cubic root of 2005355217 is about 1261.0445728101.

The spelling of 2005355217 in words is "two billion, five million, three hundred fifty-five thousand, two hundred seventeen".