255231799 has 2 divisors, whose sum is σ = 255231800. Its totient is φ = 255231798.

The previous prime is 255231787. The next prime is 255231803. The reversal of 255231799 is 997132552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255231799 - 2¹⁵ = 255199031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255231749) 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, 127615899 + 127615900.

It is an arithmetic number, because the mean of its divisors is an integer number (127615900).

Almost surely, 2^255231799 is an apocalyptic number.

255231799 is a deficient number, since it is larger than the sum of its proper divisors (1).

255231799 is an equidigital number, since it uses as much as digits as its factorization.

255231799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170100, while the sum is 43.

The square root of 255231799 is about 15975.9756822549. The cubic root of 255231799 is about 634.3246578314.

The spelling of 255231799 in words is "two hundred fifty-five million, two hundred thirty-one thousand, seven hundred ninety-nine".