2271229 has 2 divisors, whose sum is σ = 2271230. Its totient is φ = 2271228.

The previous prime is 2271223. The next prime is 2271239. The reversal of 2271229 is 9221722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2244004 + 27225 = 1498^2 + 165^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271229 - 2³ = 2271221 is a prime.

2271229 is a lucky number.

It is equal to p₁₆₇₅₆₀ and since 2271229 and 167560 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2271221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135614 + 1135615.

It is an arithmetic number, because the mean of its divisors is an integer number (1135615).

2^2271229 is an apocalyptic number.

It is an amenable number.

2271229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271229 is an equidigital number, since it uses as much as digits as its factorization.

2271229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 2271229 is about 1507.0597201173. The cubic root of 2271229 is about 131.4478967779.

It can be divided in two parts, 2271 and 229, that added together give a square (2500 = 50²).

The spelling of 2271229 in words is "two million, two hundred seventy-one thousand, two hundred twenty-nine".