55353901121 has 2 divisors, whose sum is σ = 55353901122. Its totient is φ = 55353901120.

The previous prime is 55353901111. The next prime is 55353901151. The reversal of 55353901121 is 12110935355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29092078096 + 26261823025 = 170564^2 + 162055^2 .

It is a cyclic number.

It is not a de Polignac number, because 55353901121 - 2¹⁴ = 55353884737 is a prime.

It is a super-3 number, since 3×55353901121³ (a number of 33 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55353901111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27676950560 + 27676950561.

It is an arithmetic number, because the mean of its divisors is an integer number (27676950561).

Almost surely, 2^55353901121 is an apocalyptic number.

It is an amenable number.

55353901121 is a deficient number, since it is larger than the sum of its proper divisors (1).

55353901121 is an equidigital number, since it uses as much as digits as its factorization.

55353901121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20250, while the sum is 35.

The spelling of 55353901121 in words is "fifty-five billion, three hundred fifty-three million, nine hundred one thousand, one hundred twenty-one".