550620503 has 4 divisors (see below), whose sum is σ = 550673520. Its totient is φ = 550567488.

The previous prime is 550620493. The next prime is 550620517. The reversal of 550620503 is 305026055.

550620503 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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 305026055 = 5 ⋅61005211.

It is a cyclic number.

It is not a de Polignac number, because 550620503 - 2⁴ = 550620487 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 (550620533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5243 + ... + 33596.

It is an arithmetic number, because the mean of its divisors is an integer number (137668380).

Almost surely, 2^550620503 is an apocalyptic number.

550620503 is a deficient number, since it is larger than the sum of its proper divisors (53017).

550620503 is a wasteful number, since it uses less digits than its factorization.

550620503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53016.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 550620503 is about 23465.3042383857. The cubic root of 550620503 is about 819.6292707456.

Adding to 550620503 its reverse (305026055), we get a palindrome (855646558).

The spelling of 550620503 in words is "five hundred fifty million, six hundred twenty thousand, five hundred three".