2171150605 has 24 divisors (see below), whose sum is σ = 2836041768. Its totient is φ = 1594884096.

The previous prime is 2171150599. The next prime is 2171150621. The reversal of 2171150605 is 5060511712.

It can be written as a sum of positive squares in 12 ways, for example, as 1660481001 + 510669604 = 40749^2 + 22598^2 .

It is not a de Polignac number, because 2171150605 - 2²⁹ = 1634279693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156429 + ... + 169741.

It is an arithmetic number, because the mean of its divisors is an integer number (118168407).

Almost surely, 2^2171150605 is an apocalyptic number.

It is an amenable number.

2171150605 is a deficient number, since it is larger than the sum of its proper divisors (664891163).

2171150605 is a wasteful number, since it uses less digits than its factorization.

2171150605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13537 (or 13524 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 2171150605 is about 46595.6071427340. The cubic root of 2171150605 is about 1294.8813723369.

The spelling of 2171150605 in words is "two billion, one hundred seventy-one million, one hundred fifty thousand, six hundred five".