551717 has 2 divisors, whose sum is σ = 551718. Its totient is φ = 551716.

The previous prime is 551713. The next prime is 551723. The reversal of 551717 is 717155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320356 + 231361 = 566^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 551717 - 2² = 551713 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275858 + 275859.

It is an arithmetic number, because the mean of its divisors is an integer number (275859).

2⁵⁵¹⁷¹⁷ is an apocalyptic number.

It is an amenable number.

551717 is a deficient number, since it is larger than the sum of its proper divisors (1).

551717 is an equidigital number, since it uses as much as digits as its factorization.

551717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1225, while the sum is 26.

The square root of 551717 is about 742.7765478258. The cubic root of 551717 is about 82.0172975605.

The spelling of 551717 in words is "five hundred fifty-one thousand, seven hundred seventeen".