255145643 has 2 divisors, whose sum is σ = 255145644. Its totient is φ = 255145642.

The previous prime is 255145633. The next prime is 255145691. The reversal of 255145643 is 346541552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255145643 - 2¹⁶ = 255080107 is a prime.

It is not a weakly prime, because it can be changed into another prime (255145603) 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 as a sum of consecutive naturals, namely, 127572821 + 127572822.

It is an arithmetic number, because the mean of its divisors is an integer number (127572822).

Almost surely, 2^255145643 is an apocalyptic number.

255145643 is a deficient number, since it is larger than the sum of its proper divisors (1).

255145643 is an equidigital number, since it uses as much as digits as its factorization.

255145643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 35.

The square root of 255145643 is about 15973.2790309316. The cubic root of 255145643 is about 634.2532756265.

The spelling of 255145643 in words is "two hundred fifty-five million, one hundred forty-five thousand, six hundred forty-three".