55020021241 has 2 divisors, whose sum is σ = 55020021242. Its totient is φ = 55020021240.

The previous prime is 55020021223. The next prime is 55020021253. The reversal of 55020021241 is 14212002055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54363585600 + 656435641 = 233160^2 + 25621^2 .

It is a cyclic number.

It is not a de Polignac number, because 55020021241 - 2¹⁹ = 55019496953 is a prime.

It is not a weakly prime, because it can be changed into another prime (55020021541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27510010620 + 27510010621.

It is an arithmetic number, because the mean of its divisors is an integer number (27510010621).

Almost surely, 2^55020021241 is an apocalyptic number.

It is an amenable number.

55020021241 is a deficient number, since it is larger than the sum of its proper divisors (1).

55020021241 is an equidigital number, since it uses as much as digits as its factorization.

55020021241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 55020021241 its reverse (14212002055), we get a palindrome (69232023296).

The spelling of 55020021241 in words is "fifty-five billion, twenty million, twenty-one thousand, two hundred forty-one".