255042209 has 2 divisors, whose sum is σ = 255042210. Its totient is φ = 255042208.

The previous prime is 255042199. The next prime is 255042247. The reversal of 255042209 is 902240552.

255042209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150430225 + 104611984 = 12265^2 + 10228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255042209 is a prime.

It is not a weakly prime, because it can be changed into another prime (255042259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127521104 + 127521105.

It is an arithmetic number, because the mean of its divisors is an integer number (127521105).

Almost surely, 2^255042209 is an apocalyptic number.

It is an amenable number.

255042209 is a deficient number, since it is larger than the sum of its proper divisors (1).

255042209 is an equidigital number, since it uses as much as digits as its factorization.

255042209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 255042209 is about 15970.0409830407. The cubic root of 255042209 is about 634.1675569764.

The spelling of 255042209 in words is "two hundred fifty-five million, forty-two thousand, two hundred nine".