550453643 has 4 divisors (see below), whose sum is σ = 550744200. Its totient is φ = 550163088.

The previous prime is 550453627. The next prime is 550453661. The reversal of 550453643 is 346354055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346354055 = 5 ⋅69270811.

It is a cyclic number.

It is not a de Polignac number, because 550453643 - 2⁴ = 550453627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550453663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142418 + ... + 146231.

It is an arithmetic number, because the mean of its divisors is an integer number (137686050).

Almost surely, 2^550453643 is an apocalyptic number.

550453643 is a deficient number, since it is larger than the sum of its proper divisors (290557).

550453643 is a wasteful number, since it uses less digits than its factorization.

550453643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290556.

The product of its (nonzero) digits is 108000, while the sum is 35.

The square root of 550453643 is about 23461.7485068782. The cubic root of 550453643 is about 819.5464689147.

The spelling of 550453643 in words is "five hundred fifty million, four hundred fifty-three thousand, six hundred forty-three".