55277802775553 has 2 divisors, whose sum is σ = 55277802775554. Its totient is φ = 55277802775552.

The previous prime is 55277802775529. The next prime is 55277802775619. The reversal of 55277802775553 is 35557720877255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50187490681969 + 5090312093584 = 7084313^2 + 2256172^2 .

It is a cyclic number.

It is not a de Polignac number, because 55277802775553 - 2¹⁴ = 55277802759169 is a prime.

It is not a weakly prime, because it can be changed into another prime (55277802771553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27638901387776 + 27638901387777.

It is an arithmetic number, because the mean of its divisors is an integer number (27638901387777).

Almost surely, 2^{55277802775553} is an apocalyptic number.

It is an amenable number.

55277802775553 is a deficient number, since it is larger than the sum of its proper divisors (1).

55277802775553 is an equidigital number, since it uses as much as digits as its factorization.

55277802775553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720300000, while the sum is 68.

The spelling of 55277802775553 in words is "fifty-five trillion, two hundred seventy-seven billion, eight hundred two million, seven hundred seventy-five thousand, five hundred fifty-three".