228255555 has 16 divisors (see below), whose sum is σ = 398409984. Its totient is φ = 110669280.

The previous prime is 228255551. The next prime is 228255571. The reversal of 228255555 is 555552822.

It is not a de Polignac number, because 228255555 - 2² = 228255551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228255551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 691519 + ... + 691848.

It is an arithmetic number, because the mean of its divisors is an integer number (24900624).

Almost surely, 2^228255555 is an apocalyptic number.

228255555 is a deficient number, since it is larger than the sum of its proper divisors (170154429).

228255555 is a wasteful number, since it uses less digits than its factorization.

228255555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383386.

The product of its digits is 200000, while the sum is 39.

The square root of 228255555 is about 15108.1287722868. The cubic root of 228255555 is about 611.1396369849.

The spelling of 228255555 in words is "two hundred twenty-eight million, two hundred fifty-five thousand, five hundred fifty-five".