656055173 has 2 divisors, whose sum is σ = 656055174. Its totient is φ = 656055172.

The previous prime is 656055137. The next prime is 656055181. The reversal of 656055173 is 371550656.

656055173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (656055137) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 499880164 + 156175009 = 22358^2 + 12497^2 .

It is a cyclic number.

It is not a de Polignac number, because 656055173 - 2¹⁰ = 656054149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656055193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328027586 + 328027587.

It is an arithmetic number, because the mean of its divisors is an integer number (328027587).

Almost surely, 2^656055173 is an apocalyptic number.

It is an amenable number.

656055173 is a deficient number, since it is larger than the sum of its proper divisors (1).

656055173 is an equidigital number, since it uses as much as digits as its factorization.

656055173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 656055173 is about 25613.5739989561. The cubic root of 656055173 is about 868.9206560315.

The spelling of 656055173 in words is "six hundred fifty-six million, fifty-five thousand, one hundred seventy-three".