243271445 has 8 divisors (see below), whose sum is σ = 309097944. Its totient is φ = 183169024.

The previous prime is 243271433. The next prime is 243271453. The reversal of 243271445 is 544172342.

It can be written as a sum of positive squares in 4 ways, for example, as 40436881 + 202834564 = 6359^2 + 14242^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243271445 - 2⁶ = 243271381 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1430924 + ... + 1431093.

It is an arithmetic number, because the mean of its divisors is an integer number (38637243).

Almost surely, 2^243271445 is an apocalyptic number.

It is an amenable number.

243271445 is a deficient number, since it is larger than the sum of its proper divisors (65826499).

243271445 is a wasteful number, since it uses less digits than its factorization.

243271445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862039.

The product of its digits is 26880, while the sum is 32.

The square root of 243271445 is about 15597.1614404673. The cubic root of 243271445 is about 624.2574177974.

The spelling of 243271445 in words is "two hundred forty-three million, two hundred seventy-one thousand, four hundred forty-five".