550642 has 4 divisors (see below), whose sum is σ = 825966. Its totient is φ = 275320.

The previous prime is 550637. The next prime is 550651. The reversal of 550642 is 246055.

550642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246055 = 5 ⋅49211.

It can be written as a sum of positive squares in only one way, i.e., 502681 + 47961 = 709^2 + 219^2 .

It is a super-2 number, since 2×550642² = 606413224328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) 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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137659 + ... + 137662.

2⁵⁵⁰⁶⁴² is an apocalyptic number.

550642 is a deficient number, since it is larger than the sum of its proper divisors (275324).

550642 is a wasteful number, since it uses less digits than its factorization.

550642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275323.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 550642 is about 742.0525587854. The cubic root of 550642 is about 81.9639937101.

Adding to 550642 its reverse (246055), we get a palindrome (796697).

The spelling of 550642 in words is "five hundred fifty thousand, six hundred forty-two".