55228199 has 4 divisors (see below), whose sum is σ = 59476536. Its totient is φ = 50979864.

The previous prime is 55228183. The next prime is 55228207. The reversal of 55228199 is 99182255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99182255 = 5 ⋅19836451.

It is not a de Polignac number, because 55228199 - 2⁴ = 55228183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55228169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2124149 + ... + 2124174.

It is an arithmetic number, because the mean of its divisors is an integer number (14869134).

Almost surely, 2^55228199 is an apocalyptic number.

55228199 is a deficient number, since it is larger than the sum of its proper divisors (4248337).

55228199 is a wasteful number, since it uses less digits than its factorization.

55228199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4248336.

The product of its digits is 64800, while the sum is 41.

The square root of 55228199 is about 7431.5677350072. The cubic root of 55228199 is about 380.8204778808.

The spelling of 55228199 in words is "fifty-five million, two hundred twenty-eight thousand, one hundred ninety-nine".