55444273 has 2 divisors, whose sum is σ = 55444274. Its totient is φ = 55444272.

The previous prime is 55444217. The next prime is 55444313. The reversal of 55444273 is 37244455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54420129 + 1024144 = 7377^2 + 1012^2 .

It is a cyclic number.

It is not a de Polignac number, because 55444273 - 2²¹ = 53347121 is a prime.

It is not a weakly prime, because it can be changed into another prime (55444073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27722136 + 27722137.

It is an arithmetic number, because the mean of its divisors is an integer number (27722137).

Almost surely, 2^55444273 is an apocalyptic number.

It is an amenable number.

55444273 is a deficient number, since it is larger than the sum of its proper divisors (1).

55444273 is an equidigital number, since it uses as much as digits as its factorization.

55444273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 34.

The square root of 55444273 is about 7446.0911221929. The cubic root of 55444273 is about 381.3164704313.

The spelling of 55444273 in words is "fifty-five million, four hundred forty-four thousand, two hundred seventy-three".