55122031553 has 2 divisors, whose sum is σ = 55122031554. Its totient is φ = 55122031552.

The previous prime is 55122031493. The next prime is 55122031571. The reversal of 55122031553 is 35513022155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44687000449 + 10435031104 = 211393^2 + 102152^2 .

It is a cyclic number.

It is not a de Polignac number, because 55122031553 - 2²⁰ = 55120982977 is a prime.

It is not a weakly prime, because it can be changed into another prime (55122031253) 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, 27561015776 + 27561015777.

It is an arithmetic number, because the mean of its divisors is an integer number (27561015777).

Almost surely, 2^55122031553 is an apocalyptic number.

It is an amenable number.

55122031553 is a deficient number, since it is larger than the sum of its proper divisors (1).

55122031553 is an equidigital number, since it uses as much as digits as its factorization.

55122031553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 55122031553 in words is "fifty-five billion, one hundred twenty-two million, thirty-one thousand, five hundred fifty-three".