2155837200 has 120 divisors (see below), whose sum is σ = 7533717216. Its totient is φ = 522624000.

The previous prime is 2155837199. The next prime is 2155837217. The reversal of 2155837200 is 27385512.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68461 + ... + 94860.

Almost surely, 2^2155837200 is an apocalyptic number.

2155837200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155837200 is an abundant number, since it is smaller than the sum of its proper divisors (5377880016).

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

2155837200 is a wasteful number, since it uses less digits than its factorization.

2155837200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163353 (or 163342 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 2155837200 is about 46430.9939587771. The cubic root of 2155837200 is about 1291.8298651004.

The spelling of 2155837200 in words is "two billion, one hundred fifty-five million, eight hundred thirty-seven thousand, two hundred".