655054009 has 2 divisors, whose sum is σ = 655054010. Its totient is φ = 655054008.

The previous prime is 655054003. The next prime is 655054019. The reversal of 655054009 is 900450556.

It is a happy number.

655054009 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., 642115600 + 12938409 = 25340^2 + 3597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655054009 is a prime.

It is not a weakly prime, because it can be changed into another prime (655054003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327527004 + 327527005.

It is an arithmetic number, because the mean of its divisors is an integer number (327527005).

Almost surely, 2^655054009 is an apocalyptic number.

It is an amenable number.

655054009 is a deficient number, since it is larger than the sum of its proper divisors (1).

655054009 is an equidigital number, since it uses as much as digits as its factorization.

655054009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 655054009 is about 25594.0229155168. The cubic root of 655054009 is about 868.4784295202.

The spelling of 655054009 in words is "six hundred fifty-five million, fifty-four thousand, nine".