551693 has 2 divisors, whose sum is σ = 551694. Its totient is φ = 551692.

The previous prime is 551689. The next prime is 551713. The reversal of 551693 is 396155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 405769 + 145924 = 637^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 551693 - 2² = 551689 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551693.

It is not a weakly prime, because it can be changed into another prime (551653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275846 + 275847.

It is an arithmetic number, because the mean of its divisors is an integer number (275847).

2⁵⁵¹⁶⁹³ is an apocalyptic number.

It is an amenable number.

551693 is a deficient number, since it is larger than the sum of its proper divisors (1).

551693 is an equidigital number, since it uses as much as digits as its factorization.

551693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050, while the sum is 29.

The square root of 551693 is about 742.7603920512. The cubic root of 551693 is about 82.0161082770.

The spelling of 551693 in words is "five hundred fifty-one thousand, six hundred ninety-three".