227405 has 4 divisors (see below), whose sum is σ = 272892. Its totient is φ = 181920.

The previous prime is 227399. The next prime is 227407. The reversal of 227405 is 504722.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32041 + 195364 = 179^2 + 442^2 .

It is not a de Polignac number, because 227405 - 2¹⁰ = 226381 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 (227407) 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, 22736 + ... + 22745.

It is an arithmetic number, because the mean of its divisors is an integer number (68223).

2²²⁷⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

227405 is a deficient number, since it is larger than the sum of its proper divisors (45487).

227405 is an equidigital number, since it uses as much as digits as its factorization.

227405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45486.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 227405 is about 476.8700032504. The cubic root of 227405 is about 61.0379589952.

The spelling of 227405 in words is "two hundred twenty-seven thousand, four hundred five".