227120155 has 8 divisors (see below), whose sum is σ = 276278112. Its totient is φ = 179206848.

The previous prime is 227120143. The next prime is 227120161. The reversal of 227120155 is 551021722.

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 227120155 - 2¹⁵ = 227087387 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 7 ways as a sum of consecutive naturals, for example, 310759 + ... + 311488.

It is an arithmetic number, because the mean of its divisors is an integer number (34534764).

Almost surely, 2^227120155 is an apocalyptic number.

227120155 is a deficient number, since it is larger than the sum of its proper divisors (49157957).

227120155 is an equidigital number, since it uses as much as digits as its factorization.

227120155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622325.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 227120155 is about 15070.5061295233. The cubic root of 227120155 is about 610.1246318843.

Adding to 227120155 its reverse (551021722), we get a palindrome (778141877).

The spelling of 227120155 in words is "two hundred twenty-seven million, one hundred twenty thousand, one hundred fifty-five".