243550 has 12 divisors (see below), whose sum is σ = 453096. Its totient is φ = 97400.

The previous prime is 243539. The next prime is 243553. The reversal of 243550 is 55342.

It is a happy number.

It is a super-3 number, since 3×243550³ = 43339675616625000, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243553) 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 5 ways as a sum of consecutive naturals, for example, 2386 + ... + 2485.

It is an arithmetic number, because the mean of its divisors is an integer number (37758).

2²⁴³⁵⁵⁰ is an apocalyptic number.

243550 is a deficient number, since it is larger than the sum of its proper divisors (209546).

243550 is a wasteful number, since it uses less digits than its factorization.

243550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4883 (or 4878 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 243550 is about 493.5078520145. The cubic root of 243550 is about 62.4495593027.

Adding to 243550 its reverse (55342), we get a palindrome (298892).

It can be divided in two parts, 2435 and 50, that added together give a triangular number (2485 = T₇₀).

The spelling of 243550 in words is "two hundred forty-three thousand, five hundred fifty".