55588999 has 4 divisors (see below), whose sum is σ = 58005936. Its totient is φ = 53172064.

The previous prime is 55588993. The next prime is 55589011. The reversal of 55588999 is 99988555.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99988555 = 5 ⋅19997711.

It is a cyclic number.

It is not a de Polignac number, because 55588999 - 2³ = 55588991 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55588991) 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 3 ways as a sum of consecutive naturals, for example, 1208434 + ... + 1208479.

It is an arithmetic number, because the mean of its divisors is an integer number (14501484).

Almost surely, 2^55588999 is an apocalyptic number.

55588999 is a deficient number, since it is larger than the sum of its proper divisors (2416937).

55588999 is a wasteful number, since it uses less digits than its factorization.

55588999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416936.

The product of its digits is 5832000, while the sum is 58.

The square root of 55588999 is about 7455.8030419265. The cubic root of 55588999 is about 381.6479652001.

The spelling of 55588999 in words is "fifty-five million, five hundred eighty-eight thousand, nine hundred ninety-nine".