243432573 has 4 divisors (see below), whose sum is σ = 324576768. Its totient is φ = 162288380.

The previous prime is 243432557. The next prime is 243432587. The reversal of 243432573 is 375234342.

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 243432573 - 2⁴ = 243432557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243432173) 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, 40572093 + ... + 40572098.

It is an arithmetic number, because the mean of its divisors is an integer number (81144192).

Almost surely, 2^243432573 is an apocalyptic number.

It is an amenable number.

243432573 is a deficient number, since it is larger than the sum of its proper divisors (81144195).

243432573 is an equidigital number, since it uses as much as digits as its factorization.

243432573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81144194.

The product of its digits is 60480, while the sum is 33.

The square root of 243432573 is about 15602.3258843033. The cubic root of 243432573 is about 624.3952105831.

The spelling of 243432573 in words is "two hundred forty-three million, four hundred thirty-two thousand, five hundred seventy-three".