550620842 has 4 divisors (see below), whose sum is σ = 825931266. Its totient is φ = 275310420.

The previous prime is 550620821. The next prime is 550620881. The reversal of 550620842 is 248026055.

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., 539121961 + 11498881 = 23219^2 + 3391^2 .

It is a junction number, because it is equal to n+sod(n) for n = 550620799 and 550620808.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137655209 + ... + 137655212.

Almost surely, 2^550620842 is an apocalyptic number.

550620842 is a deficient number, since it is larger than the sum of its proper divisors (275310424).

550620842 is a wasteful number, since it uses less digits than its factorization.

550620842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275310423.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 550620842 is about 23465.3114618153. The cubic root of 550620842 is about 819.6294389524.

Adding to 550620842 its reverse (248026055), we get a palindrome (798646897).

The spelling of 550620842 in words is "five hundred fifty million, six hundred twenty thousand, eight hundred forty-two".