550197161 has 2 divisors, whose sum is σ = 550197162. Its totient is φ = 550197160.

The previous prime is 550197149. The next prime is 550197203. The reversal of 550197161 is 161791055.

It is a happy number.

550197161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 550183936 + 13225 = 23456^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 550197161 - 2⁶ = 550197097 is a prime.

It is not a weakly prime, because it can be changed into another prime (550197121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275098580 + 275098581.

It is an arithmetic number, because the mean of its divisors is an integer number (275098581).

Almost surely, 2^550197161 is an apocalyptic number.

It is an amenable number.

550197161 is a deficient number, since it is larger than the sum of its proper divisors (1).

550197161 is an equidigital number, since it uses as much as digits as its factorization.

550197161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 35.

The square root of 550197161 is about 23456.2819091177. The cubic root of 550197161 is about 819.4191608445.

The spelling of 550197161 in words is "five hundred fifty million, one hundred ninety-seven thousand, one hundred sixty-one".