655537117 has 2 divisors, whose sum is σ = 655537118. Its totient is φ = 655537116.

The previous prime is 655537093. The next prime is 655537139. The reversal of 655537117 is 711735556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 624300196 + 31236921 = 24986^2 + 5589^2 .

It is a cyclic number.

It is not a de Polignac number, because 655537117 - 2¹⁹ = 655012829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 655537117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655531117) 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, 327768558 + 327768559.

It is an arithmetic number, because the mean of its divisors is an integer number (327768559).

Almost surely, 2^655537117 is an apocalyptic number.

It is an amenable number.

655537117 is a deficient number, since it is larger than the sum of its proper divisors (1).

655537117 is an equidigital number, since it uses as much as digits as its factorization.

655537117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110250, while the sum is 40.

The square root of 655537117 is about 25603.4590827099. The cubic root of 655537117 is about 868.6918805071.

The spelling of 655537117 in words is "six hundred fifty-five million, five hundred thirty-seven thousand, one hundred seventeen".