2172081572 has 12 divisors (see below), whose sum is σ = 3801474096. Its totient is φ = 1085946120.

The previous prime is 2172081553. The next prime is 2172081601. The reversal of 2172081572 is 2751802712.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64223 + ... + 92025.

It is an arithmetic number, because the mean of its divisors is an integer number (316789508).

Almost surely, 2^2172081572 is an apocalyptic number.

It is an amenable number.

2172081572 is a deficient number, since it is larger than the sum of its proper divisors (1629392524).

2172081572 is a wasteful number, since it uses less digits than its factorization.

2172081572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47338 (or 47336 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 2172081572 is about 46605.5959301026. The cubic root of 2172081572 is about 1295.0664231519.

The spelling of 2172081572 in words is "two billion, one hundred seventy-two million, eighty-one thousand, five hundred seventy-two".