2155433200 has 60 divisors (see below), whose sum is σ = 5185871208. Its totient is φ = 860934400.

The previous prime is 2155433197. The next prime is 2155433221. The reversal of 2155433200 is 23345512.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305715 + ... + 312685.

Almost surely, 2^2155433200 is an apocalyptic number.

2155433200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155433200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2592935604).

2155433200 is an abundant number, since it is smaller than the sum of its proper divisors (3030438008).

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

2155433200 is a wasteful number, since it uses less digits than its factorization.

2155433200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7762 (or 7751 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2155433200 is about 46426.6432127071. The cubic root of 2155433200 is about 1291.7491645308.

Adding to 2155433200 its reverse (23345512), we get a palindrome (2178778712).

The spelling of 2155433200 in words is "two billion, one hundred fifty-five million, four hundred thirty-three thousand, two hundred".