550997 has 2 divisors, whose sum is σ = 550998. Its totient is φ = 550996.

The previous prime is 550993. The next prime is 551003. The reversal of 550997 is 799055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 454276 + 96721 = 674^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 550997 - 2² = 550993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275498 + 275499.

It is an arithmetic number, because the mean of its divisors is an integer number (275499).

2⁵⁵⁰⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

550997 is a deficient number, since it is larger than the sum of its proper divisors (1).

550997 is an equidigital number, since it uses as much as digits as its factorization.

550997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14175, while the sum is 35.

The square root of 550997 is about 742.2917216297. The cubic root of 550997 is about 81.9816040431.

The spelling of 550997 in words is "five hundred fifty thousand, nine hundred ninety-seven".