243145053 has 24 divisors (see below), whose sum is σ = 360367488. Its totient is φ = 157902912.

The previous prime is 243145051. The next prime is 243145061. The reversal of 243145053 is 350541342.

It is not a de Polignac number, because 243145053 - 2¹ = 243145051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243145051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97326 + ... + 99792.

It is an arithmetic number, because the mean of its divisors is an integer number (15015312).

Almost surely, 2^243145053 is an apocalyptic number.

It is an amenable number.

243145053 is a deficient number, since it is larger than the sum of its proper divisors (117222435).

243145053 is a wasteful number, since it uses less digits than its factorization.

243145053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753 (or 2750 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 243145053 is about 15593.1091511603. The cubic root of 243145053 is about 624.1492878141.

Adding to 243145053 its reverse (350541342), we get a palindrome (593686395).

The spelling of 243145053 in words is "two hundred forty-three million, one hundred forty-five thousand, fifty-three".