243052401 has 4 divisors (see below), whose sum is σ = 324069872. Its totient is φ = 162034932.

The previous prime is 243052391. The next prime is 243052429. The reversal of 243052401 is 104250342.

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 not a de Polignac number, because 243052401 - 2⁷ = 243052273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243052501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40508731 + ... + 40508736.

It is an arithmetic number, because the mean of its divisors is an integer number (81017468).

Almost surely, 2^243052401 is an apocalyptic number.

It is an amenable number.

243052401 is a deficient number, since it is larger than the sum of its proper divisors (81017471).

243052401 is an equidigital number, since it uses as much as digits as its factorization.

243052401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81017470.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 243052401 is about 15590.1379403776. The cubic root of 243052401 is about 624.0699990302.

The spelling of 243052401 in words is "two hundred forty-three million, fifty-two thousand, four hundred one".