55284448213 has 2 divisors, whose sum is σ = 55284448214. Its totient is φ = 55284448212.

The previous prime is 55284448199. The next prime is 55284448277. The reversal of 55284448213 is 31284448255.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53711770564 + 1572677649 = 231758^2 + 39657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55284448213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55284448313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27642224106 + 27642224107.

It is an arithmetic number, because the mean of its divisors is an integer number (27642224107).

Almost surely, 2^55284448213 is an apocalyptic number.

It is an amenable number.

55284448213 is a deficient number, since it is larger than the sum of its proper divisors (1).

55284448213 is an equidigital number, since it uses as much as digits as its factorization.

55284448213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1228800, while the sum is 46.

The spelling of 55284448213 in words is "fifty-five billion, two hundred eighty-four million, four hundred forty-eight thousand, two hundred thirteen".