55218422020441 has 2 divisors, whose sum is σ = 55218422020442. Its totient is φ = 55218422020440.

The previous prime is 55218422020427. The next prime is 55218422020519. The reversal of 55218422020441 is 14402022481255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54217229665225 + 1001192355216 = 7363235^2 + 1000596^2 .

It is a cyclic number.

It is not a de Polignac number, because 55218422020441 - 2⁷ = 55218422020313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55218422020394 and 55218422020403.

It is not a weakly prime, because it can be changed into another prime (55218422030441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27609211010220 + 27609211010221.

It is an arithmetic number, because the mean of its divisors is an integer number (27609211010221).

Almost surely, 2^{55218422020441} is an apocalyptic number.

It is an amenable number.

55218422020441 is a deficient number, since it is larger than the sum of its proper divisors (1).

55218422020441 is an equidigital number, since it uses as much as digits as its factorization.

55218422020441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204800, while the sum is 40.

The spelling of 55218422020441 in words is "fifty-five trillion, two hundred eighteen billion, four hundred twenty-two million, twenty thousand, four hundred forty-one".