227945 has 4 divisors (see below), whose sum is σ = 273540. Its totient is φ = 182352.

The previous prime is 227893. The next prime is 227947. The reversal of 227945 is 549722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549722 = 2 ⋅274861.

It can be written as a sum of positive squares in 2 ways, for example, as 65536 + 162409 = 256^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 227945 - 2¹² = 223849 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (227947) 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 3 ways as a sum of consecutive naturals, for example, 22790 + ... + 22799.

It is an arithmetic number, because the mean of its divisors is an integer number (68385).

2²²⁷⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

227945 is a deficient number, since it is larger than the sum of its proper divisors (45595).

227945 is an equidigital number, since it uses as much as digits as its factorization.

227945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45594.

The product of its digits is 5040, while the sum is 29.

The square root of 227945 is about 477.4358595665. The cubic root of 227945 is about 61.0862347480.

The spelling of 227945 in words is "two hundred twenty-seven thousand, nine hundred forty-five".