2153523204 has 72 divisors (see below), whose sum is σ = 6243951168. Its totient is φ = 613051200.

The previous prime is 2153523191. The next prime is 2153523217. The reversal of 2153523204 is 4023253512.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2153523191) and next prime (2153523217).

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, 54379 + ... + 85229.

It is an arithmetic number, because the mean of its divisors is an integer number (86721544).

Almost surely, 2^2153523204 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 2153523204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3121975584).

2153523204 is an abundant number, since it is smaller than the sum of its proper divisors (4090427964).

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

2153523204 is a wasteful number, since it uses less digits than its factorization.

2153523204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31145 (or 31140 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2153523204 is about 46406.0686117667. The cubic root of 2153523204 is about 1291.3674988157.

Adding to 2153523204 its reverse (4023253512), we get a palindrome (6176776716).

The spelling of 2153523204 in words is "two billion, one hundred fifty-three million, five hundred twenty-three thousand, two hundred four".