255279709 has 2 divisors, whose sum is σ = 255279710. Its totient is φ = 255279708.

The previous prime is 255279683. The next prime is 255279751. The reversal of 255279709 is 907972552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182655225 + 72624484 = 13515^2 + 8522^2 .

It is a cyclic number.

It is not a de Polignac number, because 255279709 - 2⁵ = 255279677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255279799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127639854 + 127639855.

It is an arithmetic number, because the mean of its divisors is an integer number (127639855).

Almost surely, 2^255279709 is an apocalyptic number.

It is an amenable number.

255279709 is a deficient number, since it is larger than the sum of its proper divisors (1).

255279709 is an equidigital number, since it uses as much as digits as its factorization.

255279709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 255279709 is about 15977.4750508333. The cubic root of 255279709 is about 634.3643454058.

The spelling of 255279709 in words is "two hundred fifty-five million, two hundred seventy-nine thousand, seven hundred nine".