550000521 has 48 divisors (see below), whose sum is σ = 927139200. Its totient is φ = 307701504.

The previous prime is 550000519. The next prime is 550000531. The reversal of 550000521 is 125000055.

It is not a de Polignac number, because 550000521 - 2¹ = 550000519 is a prime.

It is a super-3 number, since 3×550000521³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 550000494 and 550000503.

It is not an unprimeable number, because it can be changed into a prime (550000531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 966325 + ... + 966893.

It is an arithmetic number, because the mean of its divisors is an integer number (19315400).

Almost surely, 2^550000521 is an apocalyptic number.

It is an amenable number.

550000521 is a deficient number, since it is larger than the sum of its proper divisors (377138679).

550000521 is a wasteful number, since it uses less digits than its factorization.

550000521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 550000521 is about 23452.0899068718. The cubic root of 550000521 is about 819.3215293075.

Adding to 550000521 its reverse (125000055), we get a palindrome (675000576).

The spelling of 550000521 in words is "five hundred fifty million, five hundred twenty-one", and thus it is an aban number.