243153 has 6 divisors (see below), whose sum is σ = 351234. Its totient is φ = 162096.

The previous prime is 243149. The next prime is 243157. The reversal of 243153 is 351342.

It is an interprime number because it is at equal distance from previous prime (243149) and next prime (243157).

It can be written as a sum of positive squares in only one way, i.e., 242064 + 1089 = 492^2 + 33^2 .

It is not a de Polignac number, because 243153 - 2² = 243149 is a prime.

It is an Ulam number.

It is a Curzon number.

243153 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13500 + ... + 13517.

It is an arithmetic number, because the mean of its divisors is an integer number (58539).

2²⁴³¹⁵³ is an apocalyptic number.

It is an amenable number.

243153 is a deficient number, since it is larger than the sum of its proper divisors (108081).

243153 is a wasteful number, since it uses less digits than its factorization.

243153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27023 (or 27020 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 243153 is about 493.1054653925. The cubic root of 243153 is about 62.4156087679.

Adding to 243153 its reverse (351342), we get a palindrome (594495).

The spelling of 243153 in words is "two hundred forty-three thousand, one hundred fifty-three".