55505561011133 has 2 divisors, whose sum is σ = 55505561011134. Its totient is φ = 55505561011132.

The previous prime is 55505561011099. The next prime is 55505561011157. The reversal of 55505561011133 is 33111016550555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52125324325369 + 3380236685764 = 7219787^2 + 1838542^2 .

It is a cyclic number.

It is not a de Polignac number, because 55505561011133 - 2²⁴ = 55505544233917 is a prime.

It is a super-3 number, since 3×55505561011133³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55505561001133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27752780505566 + 27752780505567.

It is an arithmetic number, because the mean of its divisors is an integer number (27752780505567).

Almost surely, 2^{55505561011133} is an apocalyptic number.

It is an amenable number.

55505561011133 is a deficient number, since it is larger than the sum of its proper divisors (1).

55505561011133 is an equidigital number, since it uses as much as digits as its factorization.

55505561011133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168750, while the sum is 41.

Adding to 55505561011133 its reverse (33111016550555), we get a palindrome (88616577561688).

The spelling of 55505561011133 in words is "fifty-five trillion, five hundred five billion, five hundred sixty-one million, eleven thousand, one hundred thirty-three".