550555171 has 2 divisors, whose sum is σ = 550555172. Its totient is φ = 550555170.

The previous prime is 550555099. The next prime is 550555177. The reversal of 550555171 is 171555055.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550555171 - 2¹³ = 550546979 is a prime.

It is a super-2 number, since 2×550555171² = 606221992629678482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (550555177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275277585 + 275277586.

It is an arithmetic number, because the mean of its divisors is an integer number (275277586).

Almost surely, 2^550555171 is an apocalyptic number.

550555171 is a deficient number, since it is larger than the sum of its proper divisors (1).

550555171 is an equidigital number, since it uses as much as digits as its factorization.

550555171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21875, while the sum is 34.

The square root of 550555171 is about 23463.9120992216. The cubic root of 550555171 is about 819.5968526905.

The spelling of 550555171 in words is "five hundred fifty million, five hundred fifty-five thousand, one hundred seventy-one".