55540022233 has 4 divisors (see below), whose sum is σ = 55540526500. Its totient is φ = 55539517968.

The previous prime is 55540022221. The next prime is 55540022257. The reversal of 55540022233 is 33222004555.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 41500616089 + 14039406144 = 203717^2 + 118488^2 .

It is a cyclic number.

It is not a de Polignac number, because 55540022233 - 2¹³ = 55540014041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55540022195 and 55540022204.

It is not an unprimeable number, because it can be changed into a prime (55540022203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8358 + ... + 333391.

It is an arithmetic number, because the mean of its divisors is an integer number (13885131625).

Almost surely, 2^55540022233 is an apocalyptic number.

It is an amenable number.

55540022233 is a deficient number, since it is larger than the sum of its proper divisors (504267).

55540022233 is a wasteful number, since it uses less digits than its factorization.

55540022233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504266.

The product of its (nonzero) digits is 36000, while the sum is 31.

Adding to 55540022233 its reverse (33222004555), we get a palindrome (88762026788).

The spelling of 55540022233 in words is "fifty-five billion, five hundred forty million, twenty-two thousand, two hundred thirty-three".