2154544203 has 16 divisors (see below), whose sum is σ = 3329358336. Its totient is φ = 1213826880.

The previous prime is 2154544199. The next prime is 2154544229. The reversal of 2154544203 is 3024454512.

It is not a de Polignac number, because 2154544203 - 2² = 2154544199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154544253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721026 + ... + 724007.

It is an arithmetic number, because the mean of its divisors is an integer number (208084896).

Almost surely, 2^2154544203 is an apocalyptic number.

2154544203 is a deficient number, since it is larger than the sum of its proper divisors (1174814133).

2154544203 is a wasteful number, since it uses less digits than its factorization.

2154544203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445114.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2154544203 is about 46417.0680138244. The cubic root of 2154544203 is about 1291.5715484106.

Adding to 2154544203 its reverse (3024454512), we get a palindrome (5178998715).

The spelling of 2154544203 in words is "two billion, one hundred fifty-four million, five hundred forty-four thousand, two hundred three".