655206550597 has 2 divisors, whose sum is σ = 655206550598. Its totient is φ = 655206550596.

The previous prime is 655206550553. The next prime is 655206550601. The reversal of 655206550597 is 795055602556.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 625798073476 + 29408477121 = 791074^2 + 171489^2 .

It is a cyclic number.

It is not a de Polignac number, because 655206550597 - 2¹⁹ = 655206026309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655206550897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327603275298 + 327603275299.

It is an arithmetic number, because the mean of its divisors is an integer number (327603275299).

Almost surely, 2^655206550597 is an apocalyptic number.

It is an amenable number.

655206550597 is a deficient number, since it is larger than the sum of its proper divisors (1).

655206550597 is an equidigital number, since it uses as much as digits as its factorization.

655206550597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14175000, while the sum is 55.

The spelling of 655206550597 in words is "six hundred fifty-five billion, two hundred six million, five hundred fifty thousand, five hundred ninety-seven".