243545485 has 8 divisors (see below), whose sum is σ = 309446136. Its totient is φ = 183375360.

The previous prime is 243545483. The next prime is 243545503. The reversal of 243545485 is 584545342.

It can be written as a sum of positive squares in 4 ways, for example, as 74701449 + 168844036 = 8643^2 + 12994^2 .

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

It is not a de Polignac number, because 243545485 - 2¹ = 243545483 is a prime.

It is a super-3 number, since 3×243545485³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243545483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432536 + ... + 1432705.

It is an arithmetic number, because the mean of its divisors is an integer number (38680767).

Almost surely, 2^243545485 is an apocalyptic number.

It is an amenable number.

243545485 is a deficient number, since it is larger than the sum of its proper divisors (65900651).

243545485 is a wasteful number, since it uses less digits than its factorization.

243545485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865263.

The product of its digits is 384000, while the sum is 40.

The square root of 243545485 is about 15605.9438996813. The cubic root of 243545485 is about 624.4917339771.

The spelling of 243545485 in words is "two hundred forty-three million, five hundred forty-five thousand, four hundred eighty-five".