253243 has 2 divisors, whose sum is σ = 253244. Its totient is φ = 253242.

The previous prime is 253229. The next prime is 253247. The reversal of 253243 is 342352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253243 - 2⁹ = 252731 is a prime.

It is equal to p₂₂₂₉₄ and since 253243 and 22294 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253243.

It is not a weakly prime, because it can be changed into another prime (253247) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126621 + 126622.

It is an arithmetic number, because the mean of its divisors is an integer number (126622).

2²⁵³²⁴³ is an apocalyptic number.

253243 is a deficient number, since it is larger than the sum of its proper divisors (1).

253243 is an equidigital number, since it uses as much as digits as its factorization.

253243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 19.

The square root of 253243 is about 503.2325506165. The cubic root of 253243 is about 63.2672780056.

Adding to 253243 its reverse (342352), we get a palindrome (595595).

It can be divided in two parts, 253 and 243, that added together give a triangular number (496 = T₃₁).

The spelling of 253243 in words is "two hundred fifty-three thousand, two hundred forty-three".