255305417 has 2 divisors, whose sum is σ = 255305418. Its totient is φ = 255305416.

The previous prime is 255305411. The next prime is 255305431. The reversal of 255305417 is 714503552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240529081 + 14776336 = 15509^2 + 3844^2 .

It is a cyclic number.

It is not a de Polignac number, because 255305417 - 2¹⁸ = 255043273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (255305411) 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, 127652708 + 127652709.

It is an arithmetic number, because the mean of its divisors is an integer number (127652709).

Almost surely, 2^255305417 is an apocalyptic number.

It is an amenable number.

255305417 is a deficient number, since it is larger than the sum of its proper divisors (1).

255305417 is an equidigital number, since it uses as much as digits as its factorization.

255305417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 255305417 is about 15978.2795381731. The cubic root of 255305417 is about 634.3856392919.

Adding to 255305417 its reverse (714503552), we get a palindrome (969808969).

The spelling of 255305417 in words is "two hundred fifty-five million, three hundred five thousand, four hundred seventeen".