55005121133 has 2 divisors, whose sum is σ = 55005121134. Its totient is φ = 55005121132.

The previous prime is 55005121123. The next prime is 55005121181. The reversal of 55005121133 is 33112150055.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54567558409 + 437562724 = 233597^2 + 20918^2 .

It is a cyclic number.

It is not a de Polignac number, because 55005121133 - 2¹⁰ = 55005120109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55005121123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27502560566 + 27502560567.

It is an arithmetic number, because the mean of its divisors is an integer number (27502560567).

Almost surely, 2^55005121133 is an apocalyptic number.

It is an amenable number.

55005121133 is a deficient number, since it is larger than the sum of its proper divisors (1).

55005121133 is an equidigital number, since it uses as much as digits as its factorization.

55005121133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 55005121133 its reverse (33112150055), we get a palindrome (88117271188).

The spelling of 55005121133 in words is "fifty-five billion, five million, one hundred twenty-one thousand, one hundred thirty-three".