550778785 has 8 divisors (see below), whose sum is σ = 661389120. Its totient is φ = 440319984.

The previous prime is 550778777. The next prime is 550778791. The reversal of 550778785 is 587877055.

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 550778785 - 2³ = 550778777 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29725 + ... + 44554.

It is an arithmetic number, because the mean of its divisors is an integer number (82673640).

Almost surely, 2^550778785 is an apocalyptic number.

It is an amenable number.

550778785 is a deficient number, since it is larger than the sum of its proper divisors (110610335).

550778785 is a wasteful number, since it uses less digits than its factorization.

550778785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75767.

The product of its (nonzero) digits is 2744000, while the sum is 52.

The square root of 550778785 is about 23468.6766776484. The cubic root of 550778785 is about 819.7078004108.

The spelling of 550778785 in words is "five hundred fifty million, seven hundred seventy-eight thousand, seven hundred eighty-five".