255215243 has 8 divisors (see below), whose sum is σ = 258390000. Its totient is φ = 252047488.

The previous prime is 255215221. The next prime is 255215321. The reversal of 255215243 is 342512552.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255215243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255215143) 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, 132455 + ... + 134367.

It is an arithmetic number, because the mean of its divisors is an integer number (32298750).

Almost surely, 2^255215243 is an apocalyptic number.

255215243 is a deficient number, since it is larger than the sum of its proper divisors (3174757).

255215243 is a wasteful number, since it uses less digits than its factorization.

255215243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501.

The product of its digits is 12000, while the sum is 29.

The square root of 255215243 is about 15975.4575208349. The cubic root of 255215243 is about 634.3109420560.

Adding to 255215243 its reverse (342512552), we get a palindrome (597727795).

The spelling of 255215243 in words is "two hundred fifty-five million, two hundred fifteen thousand, two hundred forty-three".