255405443 has 2 divisors, whose sum is σ = 255405444. Its totient is φ = 255405442.

The previous prime is 255405439. The next prime is 255405517. The reversal of 255405443 is 344504552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255405443 - 2² = 255405439 is a prime.

It is not a weakly prime, because it can be changed into another prime (255405343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127702721 + 127702722.

It is an arithmetic number, because the mean of its divisors is an integer number (127702722).

Almost surely, 2^255405443 is an apocalyptic number.

255405443 is a deficient number, since it is larger than the sum of its proper divisors (1).

255405443 is an equidigital number, since it uses as much as digits as its factorization.

255405443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 255405443 is about 15981.4092933008. The cubic root of 255405443 is about 634.4684770338.

Adding to 255405443 its reverse (344504552), we get a palindrome (599909995).

The spelling of 255405443 in words is "two hundred fifty-five million, four hundred five thousand, four hundred forty-three".