550785865 has 8 divisors (see below), whose sum is σ = 755363520. Its totient is φ = 377681712.

The previous prime is 550785847. The next prime is 550785869. The reversal of 550785865 is 568587055.

It is a happy number.

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 550785865 - 2¹¹ = 550783817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550785869) 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, 7868335 + ... + 7868404.

It is an arithmetic number, because the mean of its divisors is an integer number (94420440).

Almost surely, 2^550785865 is an apocalyptic number.

It is an amenable number.

550785865 is a deficient number, since it is larger than the sum of its proper divisors (204577655).

550785865 is a wasteful number, since it uses less digits than its factorization.

550785865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15736751.

The product of its (nonzero) digits is 1680000, while the sum is 49.

The square root of 550785865 is about 23468.8275165165. The cubic root of 550785865 is about 819.7113127141.

The spelling of 550785865 in words is "five hundred fifty million, seven hundred eighty-five thousand, eight hundred sixty-five".