2153550208 has 64 divisors (see below), whose sum is σ = 4699425600. Its totient is φ = 978460672.

The previous prime is 2153550187. The next prime is 2153550221. The reversal of 2153550208 is 8020553512.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 2153550208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46041 + ... + 80167.

It is an arithmetic number, because the mean of its divisors is an integer number (73428525).

Almost surely, 2^2153550208 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 2153550208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2349712800).

2153550208 is an abundant number, since it is smaller than the sum of its proper divisors (2545875392).

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

2153550208 is a wasteful number, since it uses less digits than its factorization.

2153550208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34187 (or 34175 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 2153550208 is about 46406.3595641804. The cubic root of 2153550208 is about 1291.3728964732.

The spelling of 2153550208 in words is "two billion, one hundred fifty-three million, five hundred fifty thousand, two hundred eight".