55558249 has 2 divisors, whose sum is σ = 55558250. Its totient is φ = 55558248.

The previous prime is 55558241. The next prime is 55558253. The reversal of 55558249 is 94285555.

55558249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55398249 + 160000 = 7443^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 55558249 - 2³ = 55558241 is a prime.

It is not a weakly prime, because it can be changed into another prime (55558241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27779124 + 27779125.

It is an arithmetic number, because the mean of its divisors is an integer number (27779125).

Almost surely, 2^55558249 is an apocalyptic number.

It is an amenable number.

55558249 is a deficient number, since it is larger than the sum of its proper divisors (1).

55558249 is an equidigital number, since it uses as much as digits as its factorization.

55558249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360000, while the sum is 43.

The square root of 55558249 is about 7453.7406045555. The cubic root of 55558249 is about 381.5775805332.

The spelling of 55558249 in words is "fifty-five million, five hundred fifty-eight thousand, two hundred forty-nine".