2133523555 has 4 divisors (see below), whose sum is σ = 2560228272. Its totient is φ = 1706818840.

The previous prime is 2133523543. The next prime is 2133523573. The reversal of 2133523555 is 5553253312.

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

It is not a de Polignac number, because 2133523555 - 2⁵ = 2133523523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2133523555.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213352351 + ... + 213352360.

It is an arithmetic number, because the mean of its divisors is an integer number (640057068).

Almost surely, 2^2133523555 is an apocalyptic number.

2133523555 is a deficient number, since it is larger than the sum of its proper divisors (426704717).

2133523555 is an equidigital number, since it uses as much as digits as its factorization.

2133523555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426704716.

The product of its digits is 67500, while the sum is 34.

The square root of 2133523555 is about 46190.0806992151. The cubic root of 2133523555 is about 1287.3574402120.

Adding to 2133523555 its reverse (5553253312), we get a palindrome (7686776867).

The spelling of 2133523555 in words is "two billion, one hundred thirty-three million, five hundred twenty-three thousand, five hundred fifty-five".