550991814 has 16 divisors (see below), whose sum is σ = 1109004528. Its totient is φ = 182493792.

The previous prime is 550991767. The next prime is 550991873. The reversal of 550991814 is 418199055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291517 + ... + 293400.

It is an arithmetic number, because the mean of its divisors is an integer number (69312783).

Almost surely, 2^550991814 is an apocalyptic number.

550991814 is an abundant number, since it is smaller than the sum of its proper divisors (558012714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550991814 is a wasteful number, since it uses less digits than its factorization.

550991814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585079.

The product of its (nonzero) digits is 64800, while the sum is 42.

The square root of 550991814 is about 23473.2148203010. The cubic root of 550991814 is about 819.8134683785.

The spelling of 550991814 in words is "five hundred fifty million, nine hundred ninety-one thousand, eight hundred fourteen".