255366643 has 4 divisors (see below), whose sum is σ = 291847600. Its totient is φ = 218885688.

The previous prime is 255366619. The next prime is 255366649. The reversal of 255366643 is 346663552.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 255366643 - 2¹⁷ = 255235571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255366596 and 255366605.

It is not an unprimeable number, because it can be changed into a prime (255366649) 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 3 ways as a sum of consecutive naturals, for example, 18240468 + ... + 18240481.

It is an arithmetic number, because the mean of its divisors is an integer number (72961900).

Almost surely, 2^255366643 is an apocalyptic number.

255366643 is a deficient number, since it is larger than the sum of its proper divisors (36480957).

255366643 is an equidigital number, since it uses as much as digits as its factorization.

255366643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36480956.

The product of its digits is 388800, while the sum is 40.

The square root of 255366643 is about 15980.1953367285. The cubic root of 255366643 is about 634.4363469125.

It can be divided in two parts, 2553 and 66643, that added together give a palindrome (69196).

The spelling of 255366643 in words is "two hundred fifty-five million, three hundred sixty-six thousand, six hundred forty-three".