551444161 has 2 divisors, whose sum is σ = 551444162. Its totient is φ = 551444160.

The previous prime is 551444141. The next prime is 551444167. The reversal of 551444161 is 161444155.

551444161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305550400 + 245893761 = 17480^2 + 15681^2 .

It is a cyclic number.

It is not a de Polignac number, because 551444161 - 2¹¹ = 551442113 is a prime.

It is equal to p_28917301 and since 551444161 and 28917301 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (551444167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275722080 + 275722081.

It is an arithmetic number, because the mean of its divisors is an integer number (275722081).

Almost surely, 2^551444161 is an apocalyptic number.

It is an amenable number.

551444161 is a deficient number, since it is larger than the sum of its proper divisors (1).

551444161 is an equidigital number, since it uses as much as digits as its factorization.

551444161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 31.

The square root of 551444161 is about 23482.8482301445. The cubic root of 551444161 is about 820.0377540618.

The spelling of 551444161 in words is "five hundred fifty-one million, four hundred forty-four thousand, one hundred sixty-one".