550687 has 4 divisors (see below), whose sum is σ = 552520. Its totient is φ = 548856.

The previous prime is 550679. The next prime is 550691. The reversal of 550687 is 786055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786055 = 5 ⋅157211.

It is a cyclic number.

It is not a de Polignac number, because 550687 - 2³ = 550679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550607) 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, 348 + ... + 1105.

It is an arithmetic number, because the mean of its divisors is an integer number (138130).

2⁵⁵⁰⁶⁸⁷ is an apocalyptic number.

550687 is a deficient number, since it is larger than the sum of its proper divisors (1833).

550687 is a wasteful number, since it uses less digits than its factorization.

550687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 550687 is about 742.0828794683. The cubic root of 550687 is about 81.9662264246.

The spelling of 550687 in words is "five hundred fifty thousand, six hundred eighty-seven".