229261 has 2 divisors, whose sum is σ = 229262. Its totient is φ = 229260.

The previous prime is 229253. The next prime is 229267. The reversal of 229261 is 162922.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145161 + 84100 = 381^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 229261 - 2³ = 229253 is a prime.

It is a super-2 number, since 2×229261² = 105121212242, which contains 22 as substring.

It is a Chen prime.

229261 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114630 + 114631.

It is an arithmetic number, because the mean of its divisors is an integer number (114631).

2²²⁹²⁶¹ is an apocalyptic number.

It is an amenable number.

229261 is a deficient number, since it is larger than the sum of its proper divisors (1).

229261 is an equidigital number, since it uses as much as digits as its factorization.

229261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 229261 is about 478.8120716941. The cubic root of 229261 is about 61.2035660844.

The spelling of 229261 in words is "two hundred twenty-nine thousand, two hundred sixty-one".