55021313293 has 2 divisors, whose sum is σ = 55021313294. Its totient is φ = 55021313292.

The previous prime is 55021313261. The next prime is 55021313341. The reversal of 55021313293 is 39231312055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45153275049 + 9868038244 = 212493^2 + 99338^2 .

It is a cyclic number.

It is not a de Polignac number, because 55021313293 - 2⁵ = 55021313261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55021313593) 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, 27510656646 + 27510656647.

It is an arithmetic number, because the mean of its divisors is an integer number (27510656647).

Almost surely, 2^55021313293 is an apocalyptic number.

It is an amenable number.

55021313293 is a deficient number, since it is larger than the sum of its proper divisors (1).

55021313293 is an equidigital number, since it uses as much as digits as its factorization.

55021313293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 34.

The spelling of 55021313293 in words is "fifty-five billion, twenty-one million, three hundred thirteen thousand, two hundred ninety-three".