2172064755 has 96 divisors (see below), whose sum is σ = 4357140480. Its totient is φ = 903997440.

The previous prime is 2172064751. The next prime is 2172064861. The reversal of 2172064755 is 5574602712.

It is not a de Polignac number, because 2172064755 - 2² = 2172064751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172064751) 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 95 ways as a sum of consecutive naturals, for example, 939541 + ... + 941849.

It is an arithmetic number, because the mean of its divisors is an integer number (45386880).

Almost surely, 2^2172064755 is an apocalyptic number.

2172064755 is an abundant number, since it is smaller than the sum of its proper divisors (2185075725).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2172064755 is a wasteful number, since it uses less digits than its factorization.

2172064755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389 (or 2372 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 2172064755 is about 46605.4155115047. The cubic root of 2172064755 is about 1295.0630808606.

The spelling of 2172064755 in words is "two billion, one hundred seventy-two million, sixty-four thousand, seven hundred fifty-five".