2172533900 has 36 divisors (see below), whose sum is σ = 4734176160. Its totient is φ = 865368000.

The previous prime is 2172533861. The next prime is 2172533917. The reversal of 2172533900 is 93352712.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21551 + ... + 69350.

Almost surely, 2^2172533900 is an apocalyptic number.

2172533900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2172533900 is an abundant number, since it is smaller than the sum of its proper divisors (2561642260).

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

2172533900 is a wasteful number, since it uses less digits than its factorization.

2172533900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91154 (or 91147 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 2172533900 is about 46610.4483994737. The cubic root of 2172533900 is about 1295.1563145191.

The spelling of 2172533900 in words is "two billion, one hundred seventy-two million, five hundred thirty-three thousand, nine hundred".