550897 has 4 divisors (see below), whose sum is σ = 552420. Its totient is φ = 549376.

The previous prime is 550861. The next prime is 550903. The reversal of 550897 is 798055.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 136161 + 414736 = 369^2 + 644^2 .

It is a cyclic number.

It is not a de Polignac number, because 550897 - 2¹⁵ = 518129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129 + ... + 1057.

It is an arithmetic number, because the mean of its divisors is an integer number (138105).

2⁵⁵⁰⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

550897 is a deficient number, since it is larger than the sum of its proper divisors (1523).

550897 is an equidigital number, since it uses as much as digits as its factorization.

550897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 550897 is about 742.2243596110. The cubic root of 550897 is about 81.9766441513.

The spelling of 550897 in words is "five hundred fifty thousand, eight hundred ninety-seven".