655055239 has 2 divisors, whose sum is σ = 655055240. Its totient is φ = 655055238.

The previous prime is 655055231. The next prime is 655055287. The reversal of 655055239 is 932550556.

It is a happy number.

655055239 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 is a cyclic number.

It is not a de Polignac number, because 655055239 - 2³ = 655055231 is a prime.

It is a super-2 number, since 2×655055239² = 858194732282694242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655055231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327527619 + 327527620.

It is an arithmetic number, because the mean of its divisors is an integer number (327527620).

Almost surely, 2^655055239 is an apocalyptic number.

655055239 is a deficient number, since it is larger than the sum of its proper divisors (1).

655055239 is an equidigital number, since it uses as much as digits as its factorization.

655055239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 202500, while the sum is 40.

The square root of 655055239 is about 25594.0469445533. The cubic root of 655055239 is about 868.4789731027.

The spelling of 655055239 in words is "six hundred fifty-five million, fifty-five thousand, two hundred thirty-nine".