205443253 has 2 divisors, whose sum is σ = 205443254. Its totient is φ = 205443252.

The previous prime is 205443247. The next prime is 205443269. The reversal of 205443253 is 352344502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180821809 + 24621444 = 13447^2 + 4962^2 .

It is a cyclic number.

It is not a de Polignac number, because 205443253 - 2¹⁷ = 205312181 is a prime.

It is equal to p_11363572 and since 205443253 and 11363572 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 (205443053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102721626 + 102721627.

It is an arithmetic number, because the mean of its divisors is an integer number (102721627).

Almost surely, 2^205443253 is an apocalyptic number.

It is an amenable number.

205443253 is a deficient number, since it is larger than the sum of its proper divisors (1).

205443253 is an equidigital number, since it uses as much as digits as its factorization.

205443253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 205443253 is about 14333.2917712576. The cubic root of 205443253 is about 590.0615209237.

Adding to 205443253 its reverse (352344502), we get a palindrome (557787755).

The spelling of 205443253 in words is "two hundred five million, four hundred forty-three thousand, two hundred fifty-three".