227720855 has 4 divisors (see below), whose sum is σ = 273265032. Its totient is φ = 182176680.

The previous prime is 227720851. The next prime is 227720863. The reversal of 227720855 is 558027722.

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

It is not a de Polignac number, because 227720855 - 2² = 227720851 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 (227720851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22772081 + ... + 22772090.

It is an arithmetic number, because the mean of its divisors is an integer number (68316258).

Almost surely, 2^227720855 is an apocalyptic number.

227720855 is a deficient number, since it is larger than the sum of its proper divisors (45544177).

227720855 is an equidigital number, since it uses as much as digits as its factorization.

227720855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45544176.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 227720855 is about 15090.4226249632. The cubic root of 227720855 is about 610.6620555305.

It can be divided in two parts, 2277 and 20855, that added together give a palindrome (23132).

The spelling of 227720855 in words is "two hundred twenty-seven million, seven hundred twenty thousand, eight hundred fifty-five".