563420173 has 2 divisors, whose sum is σ = 563420174. Its totient is φ = 563420172.

The previous prime is 563420141. The next prime is 563420177. The reversal of 563420173 is 371024365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 546297129 + 17123044 = 23373^2 + 4138^2 .

It is a cyclic number.

It is not a de Polignac number, because 563420173 - 2⁵ = 563420141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563420177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281710086 + 281710087.

It is an arithmetic number, because the mean of its divisors is an integer number (281710087).

Almost surely, 2^563420173 is an apocalyptic number.

It is an amenable number.

563420173 is a deficient number, since it is larger than the sum of its proper divisors (1).

563420173 is an equidigital number, since it uses as much as digits as its factorization.

563420173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 563420173 is about 23736.4734743812. The cubic root of 563420173 is about 825.9316920806.

The spelling of 563420173 in words is "five hundred sixty-three million, four hundred twenty thousand, one hundred seventy-three".