255318913 has 2 divisors, whose sum is σ = 255318914. Its totient is φ = 255318912.

The previous prime is 255318881. The next prime is 255318923. The reversal of 255318913 is 319813552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205291584 + 50027329 = 14328^2 + 7073^2 .

It is a cyclic number.

It is not a de Polignac number, because 255318913 - 2⁵ = 255318881 is a prime.

It is not a weakly prime, because it can be changed into another prime (255318923) 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, 127659456 + 127659457.

It is an arithmetic number, because the mean of its divisors is an integer number (127659457).

Almost surely, 2^255318913 is an apocalyptic number.

It is an amenable number.

255318913 is a deficient number, since it is larger than the sum of its proper divisors (1).

255318913 is an equidigital number, since it uses as much as digits as its factorization.

255318913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 37.

The square root of 255318913 is about 15978.7018559081. The cubic root of 255318913 is about 634.3968174301.

The spelling of 255318913 in words is "two hundred fifty-five million, three hundred eighteen thousand, nine hundred thirteen".