255355999 has 2 divisors, whose sum is σ = 255356000. Its totient is φ = 255355998.

The previous prime is 255355993. The next prime is 255356009. The reversal of 255355999 is 999553552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255355999 - 2⁵ = 255355967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255355993) 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, 127677999 + 127678000.

It is an arithmetic number, because the mean of its divisors is an integer number (127678000).

Almost surely, 2^255355999 is an apocalyptic number.

255355999 is a deficient number, since it is larger than the sum of its proper divisors (1).

255355999 is an equidigital number, since it uses as much as digits as its factorization.

255355999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2733750, while the sum is 52.

The square root of 255355999 is about 15979.8622960275. The cubic root of 255355999 is about 634.4275320908.

The spelling of 255355999 in words is "two hundred fifty-five million, three hundred fifty-five thousand, nine hundred ninety-nine".