550031643 has 12 divisors (see below), whose sum is σ = 907988848. Its totient is φ = 314303760.

The previous prime is 550031641. The next prime is 550031663. The reversal of 550031643 is 346130055.

It is not a de Polignac number, because 550031643 - 2¹ = 550031641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550031641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4365268 + ... + 4365393.

Almost surely, 2^550031643 is an apocalyptic number.

550031643 is a deficient number, since it is larger than the sum of its proper divisors (357957205).

550031643 is a wasteful number, since it uses less digits than its factorization.

550031643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8730674 (or 8730671 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 550031643 is about 23452.7534204409. The cubic root of 550031643 is about 819.3369828951.

Adding to 550031643 its reverse (346130055), we get a palindrome (896161698).

The spelling of 550031643 in words is "five hundred fifty million, thirty-one thousand, six hundred forty-three".