228116555 has 4 divisors (see below), whose sum is σ = 273739872. Its totient is φ = 182493240.

The previous prime is 228116533. The next prime is 228116587. The reversal of 228116555 is 555611822.

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

It is not a de Polignac number, because 228116555 - 2⁶ = 228116491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 22811651 + ... + 22811660.

It is an arithmetic number, because the mean of its divisors is an integer number (68434968).

Almost surely, 2^228116555 is an apocalyptic number.

228116555 is a deficient number, since it is larger than the sum of its proper divisors (45623317).

228116555 is an equidigital number, since it uses as much as digits as its factorization.

228116555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45623316.

The product of its digits is 24000, while the sum is 35.

The square root of 228116555 is about 15103.5278991367. The cubic root of 228116555 is about 611.0155572607.

The spelling of 228116555 in words is "two hundred twenty-eight million, one hundred sixteen thousand, five hundred fifty-five".