550243213 has 6 divisors (see below), whose sum is σ = 595825674. Its totient is φ = 507916656.

The previous prime is 550243189. The next prime is 550243219. The reversal of 550243213 is 312342055.

It can be written as a sum of positive squares in 3 ways, for example, as 33953929 + 516289284 = 5827^2 + 22722^2 .

It is not a de Polignac number, because 550243213 - 2⁵ = 550243181 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 (550243219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1627770 + ... + 1628107.

It is an arithmetic number, because the mean of its divisors is an integer number (99304279).

Almost surely, 2^550243213 is an apocalyptic number.

It is an amenable number.

550243213 is a deficient number, since it is larger than the sum of its proper divisors (45582461).

550243213 is a wasteful number, since it uses less digits than its factorization.

550243213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255903 (or 3255890 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 550243213 is about 23457.2635445825. The cubic root of 550243213 is about 819.4420222483.

Adding to 550243213 its reverse (312342055), we get a palindrome (862585268).

The spelling of 550243213 in words is "five hundred fifty million, two hundred forty-three thousand, two hundred thirteen".