550857643 has 8 divisors (see below), whose sum is σ = 633070080. Its totient is φ = 469524840.

The previous prime is 550857641. The next prime is 550857661. The reversal of 550857643 is 346758055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 550857643 - 2¹ = 550857641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 550857643.

It is not an unprimeable number, because it can be changed into a prime (550857641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218563 + ... + 221068.

It is an arithmetic number, because the mean of its divisors is an integer number (79133760).

Almost surely, 2^550857643 is an apocalyptic number.

550857643 is a deficient number, since it is larger than the sum of its proper divisors (82212437).

550857643 is a wasteful number, since it uses less digits than its factorization.

550857643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439817.

The product of its (nonzero) digits is 504000, while the sum is 43.

The square root of 550857643 is about 23470.3566866803. The cubic root of 550857643 is about 819.7469192214.

The spelling of 550857643 in words is "five hundred fifty million, eight hundred fifty-seven thousand, six hundred forty-three".