2155233300 has 144 divisors (see below), whose sum is σ = 6873851712. Its totient is φ = 517017600.

The previous prime is 2155233277. The next prime is 2155233317. The reversal of 2155233300 is 33325512.

It is a happy number.

It is a super-3 number, since 3×2155233300³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 316734 + ... + 323466.

Almost surely, 2^2155233300 is an apocalyptic number.

2155233300 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 2155233300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3436925856).

2155233300 is an abundant number, since it is smaller than the sum of its proper divisors (4718618412).

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

2155233300 is a wasteful number, since it uses less digits than its factorization.

2155233300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6858 (or 6851 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 2155233300 is about 46424.4903041487. The cubic root of 2155233300 is about 1291.7092299999.

Adding to 2155233300 its reverse (33325512), we get a palindrome (2188558812).

The spelling of 2155233300 in words is "two billion, one hundred fifty-five million, two hundred thirty-three thousand, three hundred".