243283253 has 2 divisors, whose sum is σ = 243283254. Its totient is φ = 243283252.

The previous prime is 243283241. The next prime is 243283279. The reversal of 243283253 is 352382342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227466724 + 15816529 = 15082^2 + 3977^2 .

It is a cyclic number.

It is not a de Polignac number, because 243283253 - 2¹⁰ = 243282229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243283223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121641626 + 121641627.

It is an arithmetic number, because the mean of its divisors is an integer number (121641627).

Almost surely, 2^243283253 is an apocalyptic number.

It is an amenable number.

243283253 is a deficient number, since it is larger than the sum of its proper divisors (1).

243283253 is an equidigital number, since it uses as much as digits as its factorization.

243283253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 32.

The square root of 243283253 is about 15597.5399662896. The cubic root of 243283253 is about 624.2675177804.

The spelling of 243283253 in words is "two hundred forty-three million, two hundred eighty-three thousand, two hundred fifty-three".