227845 has 4 divisors (see below), whose sum is σ = 273420. Its totient is φ = 182272.

The previous prime is 227827. The next prime is 227849. The reversal of 227845 is 548722.

227845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548722 = 2 ⋅274361.

It can be written as a sum of positive squares in 2 ways, for example, as 159201 + 68644 = 399^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 227845 - 2¹⁵ = 195077 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22780 + ... + 22789.

It is an arithmetic number, because the mean of its divisors is an integer number (68355).

2²²⁷⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

227845 is a deficient number, since it is larger than the sum of its proper divisors (45575).

227845 is an equidigital number, since it uses as much as digits as its factorization.

227845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45574.

The product of its digits is 4480, while the sum is 28.

The square root of 227845 is about 477.3311219688. The cubic root of 227845 is about 61.0773005504.

The spelling of 227845 in words is "two hundred twenty-seven thousand, eight hundred forty-five".