243132545 has 8 divisors (see below), whose sum is σ = 293858880. Its totient is φ = 193106160.

The previous prime is 243132541. The next prime is 243132577. The reversal of 243132545 is 545231342.

It is a happy number.

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

It is not a de Polignac number, because 243132545 - 2² = 243132541 is a prime.

It is a super-2 number, since 2×243132545² = 118226868876354050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243132541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174221 + ... + 175610.

It is an arithmetic number, because the mean of its divisors is an integer number (36732360).

Almost surely, 2^243132545 is an apocalyptic number.

It is an amenable number.

243132545 is a deficient number, since it is larger than the sum of its proper divisors (50726335).

243132545 is a wasteful number, since it uses less digits than its factorization.

243132545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349975.

The product of its digits is 14400, while the sum is 29.

The square root of 243132545 is about 15592.7080714031. The cubic root of 243132545 is about 624.1385850216.

Adding to 243132545 its reverse (545231342), we get a palindrome (788363887).

The spelling of 243132545 in words is "two hundred forty-three million, one hundred thirty-two thousand, five hundred forty-five".