255420379 has 2 divisors, whose sum is σ = 255420380. Its totient is φ = 255420378.

The previous prime is 255420343. The next prime is 255420383. The reversal of 255420379 is 973024552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255420379 - 2⁷ = 255420251 is a prime.

It is not a weakly prime, because it can be changed into another prime (255420779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127710189 + 127710190.

It is an arithmetic number, because the mean of its divisors is an integer number (127710190).

Almost surely, 2^255420379 is an apocalyptic number.

255420379 is a deficient number, since it is larger than the sum of its proper divisors (1).

255420379 is an equidigital number, since it uses as much as digits as its factorization.

255420379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 255420379 is about 15981.8765794258. The cubic root of 255420379 is about 634.4808446069.

The spelling of 255420379 in words is "two hundred fifty-five million, four hundred twenty thousand, three hundred seventy-nine".