2171577243 has 16 divisors (see below), whose sum is σ = 3187641600. Its totient is φ = 1304030880.

The previous prime is 2171577179. The next prime is 2171577293. The reversal of 2171577243 is 3427751712.

It is not a de Polignac number, because 2171577243 - 2⁶ = 2171577179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2171577293) 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 15 ways as a sum of consecutive naturals, for example, 298263 + ... + 305456.

It is an arithmetic number, because the mean of its divisors is an integer number (199227600).

Almost surely, 2^2171577243 is an apocalyptic number.

2171577243 is a deficient number, since it is larger than the sum of its proper divisors (1016064357).

2171577243 is a wasteful number, since it uses less digits than its factorization.

2171577243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603842.

The product of its digits is 82320, while the sum is 39.

The square root of 2171577243 is about 46600.1850103624. The cubic root of 2171577243 is about 1294.9661828848.

The spelling of 2171577243 in words is "two billion, one hundred seventy-one million, five hundred seventy-seven thousand, two hundred forty-three".