2172055000 has 40 divisors (see below), whose sum is σ = 5089136580. Its totient is φ = 868820000.

The previous prime is 2172054893. The next prime is 2172055009. The reversal of 2172055000 is 5502712.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172055009) 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 9 ways as a sum of consecutive naturals, for example, 212206 + ... + 222205.

Almost surely, 2^2172055000 is an apocalyptic number.

2172055000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2172055000 is an abundant number, since it is smaller than the sum of its proper divisors (2917081580).

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

2172055000 is an equidigital number, since it uses as much as digits as its factorization.

2172055000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434437 (or 434418 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 2172055000 is about 46605.3108561675. The cubic root of 2172055000 is about 1295.0611420971.

Adding to 2172055000 its reverse (5502712), we get a palindrome (2177557712).

The spelling of 2172055000 in words is "two billion, one hundred seventy-two million, fifty-five thousand".