655020491 has 2 divisors, whose sum is σ = 655020492. Its totient is φ = 655020490.

The previous prime is 655020467. The next prime is 655020517. The reversal of 655020491 is 194020556.

It is a happy number.

655020491 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 655020491 - 2¹⁰ = 655019467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (655020461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327510245 + 327510246.

It is an arithmetic number, because the mean of its divisors is an integer number (327510246).

Almost surely, 2^655020491 is an apocalyptic number.

655020491 is a deficient number, since it is larger than the sum of its proper divisors (1).

655020491 is an equidigital number, since it uses as much as digits as its factorization.

655020491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 655020491 is about 25593.3681058199. The cubic root of 655020491 is about 868.4636164126.

The spelling of 655020491 in words is "six hundred fifty-five million, twenty thousand, four hundred ninety-one".