2153555312 has 40 divisors (see below), whose sum is σ = 4358396640. Its totient is φ = 1029530880.

The previous prime is 2153555311. The next prime is 2153555351. The reversal of 2153555312 is 2135553512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153555311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25262 + ... + 70322.

It is an arithmetic number, because the mean of its divisors is an integer number (108959916).

Almost surely, 2^2153555312 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 2153555312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2179198320).

2153555312 is an abundant number, since it is smaller than the sum of its proper divisors (2204841328).

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

2153555312 is a wasteful number, since it uses less digits than its factorization.

2153555312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45201 (or 45195 counting only the distinct ones).

The product of its digits is 22500, while the sum is 32.

The square root of 2153555312 is about 46406.4145566106. The cubic root of 2153555312 is about 1291.3739166742.

The spelling of 2153555312 in words is "two billion, one hundred fifty-three million, five hundred fifty-five thousand, three hundred twelve".