228961555 has 8 divisors (see below), whose sum is σ = 275282352. Its totient is φ = 182816928.

The previous prime is 228961549. The next prime is 228961591. The reversal of 228961555 is 555169822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228961555 - 2³ = 228961547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41164 + ... + 46393.

It is an arithmetic number, because the mean of its divisors is an integer number (34410294).

Almost surely, 2^228961555 is an apocalyptic number.

228961555 is a deficient number, since it is larger than the sum of its proper divisors (46320797).

228961555 is an equidigital number, since it uses as much as digits as its factorization.

228961555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88085.

The product of its digits is 216000, while the sum is 43.

The square root of 228961555 is about 15131.4756385489. The cubic root of 228961555 is about 611.7690784065.

The spelling of 228961555 in words is "two hundred twenty-eight million, nine hundred sixty-one thousand, five hundred fifty-five".