2171539355 has 32 divisors (see below), whose sum is σ = 2817884160. Its totient is φ = 1601285760.

The previous prime is 2171539351. The next prime is 2171539399. The reversal of 2171539355 is 5539351712.

It is not a de Polignac number, because 2171539355 - 2² = 2171539351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2171539351) 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 31 ways as a sum of consecutive naturals, for example, 806822 + ... + 809508.

It is an arithmetic number, because the mean of its divisors is an integer number (88058880).

Almost surely, 2^2171539355 is an apocalyptic number.

2171539355 is a deficient number, since it is larger than the sum of its proper divisors (646344805).

2171539355 is a wasteful number, since it uses less digits than its factorization.

2171539355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939.

The product of its digits is 141750, while the sum is 41.

The square root of 2171539355 is about 46599.7784865980. The cubic root of 2171539355 is about 1294.9586516516.

The spelling of 2171539355 in words is "two billion, one hundred seventy-one million, five hundred thirty-nine thousand, three hundred fifty-five".