243248001 has 4 divisors (see below), whose sum is σ = 324330672. Its totient is φ = 162165332.

The previous prime is 243247999. The next prime is 243248009. The reversal of 243248001 is 100842342.

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 243248001 - 2¹ = 243247999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243248009) 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, 40541331 + ... + 40541336.

It is an arithmetic number, because the mean of its divisors is an integer number (81082668).

Almost surely, 2^243248001 is an apocalyptic number.

It is an amenable number.

243248001 is a deficient number, since it is larger than the sum of its proper divisors (81082671).

243248001 is an equidigital number, since it uses as much as digits as its factorization.

243248001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81082670.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 243248001 is about 15596.4098753527. The cubic root of 243248001 is about 624.2373639833.

The spelling of 243248001 in words is "two hundred forty-three million, two hundred forty-eight thousand, one".