227145 has 16 divisors (see below), whose sum is σ = 383040. Its totient is φ = 114624.

The previous prime is 227131. The next prime is 227147. The reversal of 227145 is 541722.

It is not a de Polignac number, because 227145 - 2⁵ = 227113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (227147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114 + ... + 683.

It is an arithmetic number, because the mean of its divisors is an integer number (23940).

2²²⁷¹⁴⁵ is an apocalyptic number.

It is an amenable number.

227145 is a deficient number, since it is larger than the sum of its proper divisors (155895).

227145 is a wasteful number, since it uses less digits than its factorization.

227145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824.

The product of its digits is 560, while the sum is 21.

The square root of 227145 is about 476.5973143021. The cubic root of 227145 is about 61.0146878543.

Adding to 227145 its reverse (541722), we get a palindrome (768867).

The spelling of 227145 in words is "two hundred twenty-seven thousand, one hundred forty-five".