2155303332 has 144 divisors (see below), whose sum is σ = 6751343872. Its totient is φ = 564537600.

The previous prime is 2155303331. The next prime is 2155303421. The reversal of 2155303332 is 2333035512.

2155303332 is a `hidden beast` number, since 21 + 5 + 5 + 303 + 332 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2155303296 and 2155303305.

It is not an unprimeable number, because it can be changed into a prime (2155303331) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 492498 + ... + 496854.

Almost surely, 2^2155303332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155303332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3375671936).

2155303332 is an abundant number, since it is smaller than the sum of its proper divisors (4596040540).

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

2155303332 is a wasteful number, since it uses less digits than its factorization.

2155303332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538 (or 4533 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 2155303332 is about 46425.2445550909. The cubic root of 2155303332 is about 1291.7232207515.

Adding to 2155303332 its reverse (2333035512), we get a palindrome (4488338844).

The spelling of 2155303332 in words is "two billion, one hundred fifty-five million, three hundred three thousand, three hundred thirty-two".