2153015553 has 24 divisors (see below), whose sum is σ = 3124744032. Its totient is φ = 1318007808.

The previous prime is 2153015509. The next prime is 2153015569. The reversal of 2153015553 is 3555103512.

It is not a de Polignac number, because 2153015553 - 2¹⁰ = 2153014529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2153015553.

It is not an unprimeable number, because it can be changed into a prime (2153015653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86850 + ... + 108852.

It is an arithmetic number, because the mean of its divisors is an integer number (130197668).

Almost surely, 2^2153015553 is an apocalyptic number.

It is an amenable number.

2153015553 is a deficient number, since it is larger than the sum of its proper divisors (971728479).

2153015553 is a wasteful number, since it uses less digits than its factorization.

2153015553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22225 (or 22212 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 2153015553 is about 46400.5986276039. The cubic root of 2153015553 is about 1291.2660192929.

The spelling of 2153015553 in words is "two billion, one hundred fifty-three million, fifteen thousand, five hundred fifty-three".