55227421573 has 2 divisors, whose sum is σ = 55227421574. Its totient is φ = 55227421572.

The previous prime is 55227421471. The next prime is 55227421591. The reversal of 55227421573 is 37512472255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41330076804 + 13897344769 = 203298^2 + 117887^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55227421573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55227421973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27613710786 + 27613710787.

It is an arithmetic number, because the mean of its divisors is an integer number (27613710787).

Almost surely, 2^55227421573 is an apocalyptic number.

It is an amenable number.

55227421573 is a deficient number, since it is larger than the sum of its proper divisors (1).

55227421573 is an equidigital number, since it uses as much as digits as its factorization.

55227421573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588000, while the sum is 43.

The spelling of 55227421573 in words is "fifty-five billion, two hundred twenty-seven million, four hundred twenty-one thousand, five hundred seventy-three".