55588393 has 12 divisors (see below), whose sum is σ = 66413892. Its totient is φ = 46357920.

The previous prime is 55588387. The next prime is 55588483. The reversal of 55588393 is 39388555.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53406864 + 2181529 = 7308^2 + 1477^2 .

It is not a de Polignac number, because 55588393 - 2⁹ = 55587881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55588303) 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 in 11 ways as a sum of consecutive naturals, for example, 13518 + ... + 17143.

It is an arithmetic number, because the mean of its divisors is an integer number (5534491).

Almost surely, 2^55588393 is an apocalyptic number.

It is an amenable number.

55588393 is a deficient number, since it is larger than the sum of its proper divisors (10825499).

55588393 is a wasteful number, since it uses less digits than its factorization.

55588393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30712 (or 30705 counting only the distinct ones).

The product of its digits is 648000, while the sum is 46.

The square root of 55588393 is about 7455.7624023302. The cubic root of 55588393 is about 381.6465783579.

The spelling of 55588393 in words is "fifty-five million, five hundred eighty-eight thousand, three hundred ninety-three".