255442243 has 12 divisors (see below), whose sum is σ = 297449712. Its totient is φ = 218727600.

The previous prime is 255442219. The next prime is 255442249. The reversal of 255442243 is 342244552.

It is not a de Polignac number, because 255442243 - 2⁹ = 255441731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255442249) 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 11 ways as a sum of consecutive naturals, for example, 61746 + ... + 65752.

It is an arithmetic number, because the mean of its divisors is an integer number (24787476).

Almost surely, 2^255442243 is an apocalyptic number.

255442243 is a deficient number, since it is larger than the sum of its proper divisors (42007469).

255442243 is a wasteful number, since it uses less digits than its factorization.

255442243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322 (or 5315 counting only the distinct ones).

The product of its digits is 38400, while the sum is 31.

The square root of 255442243 is about 15982.5605895926. The cubic root of 255442243 is about 634.4989479567.

Adding to 255442243 its reverse (342244552), we get a palindrome (597686795).

The spelling of 255442243 in words is "two hundred fifty-five million, four hundred forty-two thousand, two hundred forty-three".