550786 has 4 divisors (see below), whose sum is σ = 826182. Its totient is φ = 275392.

The previous prime is 550763. The next prime is 550789. The reversal of 550786 is 687055.

550786 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 463761 + 87025 = 681^2 + 295^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137695 + ... + 137698.

2⁵⁵⁰⁷⁸⁶ is an apocalyptic number.

550786 is a deficient number, since it is larger than the sum of its proper divisors (275396).

550786 is a wasteful number, since it uses less digits than its factorization.

550786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275395.

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

The square root of 550786 is about 742.1495806103. The cubic root of 550786 is about 81.9711379686.

The spelling of 550786 in words is "five hundred fifty thousand, seven hundred eighty-six".