243252273 has 16 divisors (see below), whose sum is σ = 355377600. Its totient is φ = 146777280.

The previous prime is 243252271. The next prime is 243252343. The reversal of 243252273 is 372252342.

It is not a de Polignac number, because 243252273 - 2¹ = 243252271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243252273.

It is not an unprimeable number, because it can be changed into a prime (243252271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8538 + ... + 23651.

It is an arithmetic number, because the mean of its divisors is an integer number (22211100).

Almost surely, 2^243252273 is an apocalyptic number.

It is an amenable number.

243252273 is a deficient number, since it is larger than the sum of its proper divisors (112125327).

243252273 is a wasteful number, since it uses less digits than its factorization.

243252273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32432.

The product of its digits is 20160, while the sum is 30.

The square root of 243252273 is about 15596.5468293466. The cubic root of 243252273 is about 624.2410183146.

The spelling of 243252273 in words is "two hundred forty-three million, two hundred fifty-two thousand, two hundred seventy-three".