551497888794169 has 2 divisors, whose sum is σ = 551497888794170. Its totient is φ = 551497888794168.

The previous prime is 551497888794131. The next prime is 551497888794173. The reversal of 551497888794169 is 961497888794155.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 461890460939769 + 89607427854400 = 21491637^2 + 9466120^2 .

It is a cyclic number.

It is not a de Polignac number, because 551497888794169 - 2³⁵ = 551463529055801 is a prime.

It is a super-2 number, since 2×551497888794169² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (551497888794179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275748944397084 + 275748944397085.

It is an arithmetic number, because the mean of its divisors is an integer number (275748944397085).

Almost surely, 2^{551497888794169} is an apocalyptic number.

It is an amenable number.

551497888794169 is a deficient number, since it is larger than the sum of its proper divisors (1).

551497888794169 is an equidigital number, since it uses as much as digits as its factorization.

551497888794169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43893964800, while the sum is 91.

The spelling of 551497888794169 in words is "five hundred fifty-one trillion, four hundred ninety-seven billion, eight hundred eighty-eight million, seven hundred ninety-four thousand, one hundred sixty-nine".