243253453 has 4 divisors (see below), whose sum is σ = 243324928. Its totient is φ = 243181980.

The previous prime is 243253441. The next prime is 243253457. The reversal of 243253453 is 354352342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243253453 - 2⁹ = 243252941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243253457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30363 + ... + 37528.

It is an arithmetic number, because the mean of its divisors is an integer number (60831232).

Almost surely, 2^243253453 is an apocalyptic number.

It is an amenable number.

243253453 is a deficient number, since it is larger than the sum of its proper divisors (71475).

243253453 is an equidigital number, since it uses as much as digits as its factorization.

243253453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71474.

The product of its digits is 43200, while the sum is 31.

The square root of 243253453 is about 15596.5846581872. The cubic root of 243253453 is about 624.2420276964.

The spelling of 243253453 in words is "two hundred forty-three million, two hundred fifty-three thousand, four hundred fifty-three".