55578099 has 4 divisors (see below), whose sum is σ = 74104136. Its totient is φ = 37052064.

The previous prime is 55578053. The next prime is 55578109. The reversal of 55578099 is 99087555.

55578099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55578099 - 2⁷ = 55577971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55578799) 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 in 3 ways as a sum of consecutive naturals, for example, 9263014 + ... + 9263019.

It is an arithmetic number, because the mean of its divisors is an integer number (18526034).

Almost surely, 2^55578099 is an apocalyptic number.

55578099 is a deficient number, since it is larger than the sum of its proper divisors (18526037).

55578099 is a wasteful number, since it uses less digits than its factorization.

55578099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18526036.

The product of its (nonzero) digits is 567000, while the sum is 48.

The square root of 55578099 is about 7455.0720318452. The cubic root of 55578099 is about 381.6230188089.

The spelling of 55578099 in words is "fifty-five million, five hundred seventy-eight thousand, ninety-nine".