551197 has 2 divisors, whose sum is σ = 551198. Its totient is φ = 551196.

The previous prime is 551179. The next prime is 551207. The reversal of 551197 is 791155.

Together with previous prime (551179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 549081 + 2116 = 741^2 + 46^2 .

It is a cyclic number.

It is not a de Polignac number, because 551197 - 2⁷ = 551069 is a prime.

551197 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275598 + 275599.

It is an arithmetic number, because the mean of its divisors is an integer number (275599).

2⁵⁵¹¹⁹⁷ is an apocalyptic number.

It is an amenable number.

551197 is a deficient number, since it is larger than the sum of its proper divisors (1).

551197 is an equidigital number, since it uses as much as digits as its factorization.

551197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1575, while the sum is 28.

The square root of 551197 is about 742.4264273314. The cubic root of 551197 is about 81.9915220265.

The spelling of 551197 in words is "five hundred fifty-one thousand, one hundred ninety-seven".