2005257171 has 8 divisors (see below), whose sum is σ = 2765872080. Its totient is φ = 1290740192.

The previous prime is 2005257161. The next prime is 2005257179. The reversal of 2005257171 is 1717525002.

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 2005257171 - 2⁷ = 2005257043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2005257179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11524380 + ... + 11524553.

It is an arithmetic number, because the mean of its divisors is an integer number (345734010).

Almost surely, 2^2005257171 is an apocalyptic number.

2005257171 is a deficient number, since it is larger than the sum of its proper divisors (760614909).

2005257171 is a wasteful number, since it uses less digits than its factorization.

2005257171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23048965.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 2005257171 is about 44780.0979342386. The cubic root of 2005257171 is about 1261.0240207752.

The spelling of 2005257171 in words is "two billion, five million, two hundred fifty-seven thousand, one hundred seventy-one".