55123450133 has 2 divisors, whose sum is σ = 55123450134. Its totient is φ = 55123450132.

The previous prime is 55123450121. The next prime is 55123450139. The reversal of 55123450133 is 33105432155.

55123450133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37768812964 + 17354637169 = 194342^2 + 131737^2 .

It is a cyclic number.

It is not a de Polignac number, because 55123450133 - 2⁶ = 55123450069 is a prime.

It is a super-3 number, since 3×55123450133³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55123450133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55123450139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27561725066 + 27561725067.

It is an arithmetic number, because the mean of its divisors is an integer number (27561725067).

Almost surely, 2^55123450133 is an apocalyptic number.

It is an amenable number.

55123450133 is a deficient number, since it is larger than the sum of its proper divisors (1).

55123450133 is an equidigital number, since it uses as much as digits as its factorization.

55123450133 is an evil number, because the sum of its binary digits is even.

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

Adding to 55123450133 its reverse (33105432155), we get a palindrome (88228882288).

The spelling of 55123450133 in words is "fifty-five billion, one hundred twenty-three million, four hundred fifty thousand, one hundred thirty-three".