556016173 has 2 divisors, whose sum is σ = 556016174. Its totient is φ = 556016172.

The previous prime is 556016113. The next prime is 556016189. The reversal of 556016173 is 371610655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495596644 + 60419529 = 22262^2 + 7773^2 .

It is a cyclic number.

It is not a de Polignac number, because 556016173 - 2⁹ = 556015661 is a prime.

It is a super-3 number, since 3×556016173³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556016113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278008086 + 278008087.

It is an arithmetic number, because the mean of its divisors is an integer number (278008087).

Almost surely, 2^556016173 is an apocalyptic number.

It is an amenable number.

556016173 is a deficient number, since it is larger than the sum of its proper divisors (1).

556016173 is an equidigital number, since it uses as much as digits as its factorization.

556016173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 556016173 is about 23579.9951865983. The cubic root of 556016173 is about 822.2978247427.

The spelling of 556016173 in words is "five hundred fifty-six million, sixteen thousand, one hundred seventy-three".