2143533155 has 4 divisors (see below), whose sum is σ = 2572239792. Its totient is φ = 1714826520.

The previous prime is 2143533151. The next prime is 2143533169. The reversal of 2143533155 is 5513353412.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2143533155 - 2² = 2143533151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143533151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214353311 + ... + 214353320.

It is an arithmetic number, because the mean of its divisors is an integer number (643059948).

Almost surely, 2^2143533155 is an apocalyptic number.

2143533155 is a deficient number, since it is larger than the sum of its proper divisors (428706637).

2143533155 is an equidigital number, since it uses as much as digits as its factorization.

2143533155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428706636.

The product of its digits is 27000, while the sum is 32.

The square root of 2143533155 is about 46298.3061785202. The cubic root of 2143533155 is about 1289.3675474767.

Adding to 2143533155 its reverse (5513353412), we get a palindrome (7656886567).

The spelling of 2143533155 in words is "two billion, one hundred forty-three million, five hundred thirty-three thousand, one hundred fifty-five".