2655209 has 2 divisors, whose sum is σ = 2655210. Its totient is φ = 2655208.

The previous prime is 2655199. The next prime is 2655217. The reversal of 2655209 is 9025562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2059225 + 595984 = 1435^2 + 772^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2655209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2655259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1327604 + 1327605.

It is an arithmetic number, because the mean of its divisors is an integer number (1327605).

2^2655209 is an apocalyptic number.

It is an amenable number.

2655209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2655209 is an equidigital number, since it uses as much as digits as its factorization.

2655209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 2655209 is about 1629.4812057830. The cubic root of 2655209 is about 138.4733621828.

The spelling of 2655209 in words is "two million, six hundred fifty-five thousand, two hundred nine".