550020915 has 32 divisors (see below), whose sum is σ = 984883200. Its totient is φ = 291224160.

The previous prime is 550020901. The next prime is 550020929. The reversal of 550020915 is 519020055.

550020915 is a `hidden beast` number, since 550 + 0 + 20 + 91 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (550020901) and next prime (550020929).

It is not a de Polignac number, because 550020915 - 2⁸ = 550020659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 4110 + ... + 33420.

It is an arithmetic number, because the mean of its divisors is an integer number (30777600).

Almost surely, 2^550020915 is an apocalyptic number.

550020915 is a deficient number, since it is larger than the sum of its proper divisors (434862285).

550020915 is a wasteful number, since it uses less digits than its factorization.

550020915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29464 (or 29458 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 550020915 is about 23452.5247041763. The cubic root of 550020915 is about 819.3316559868.

The spelling of 550020915 in words is "five hundred fifty million, twenty thousand, nine hundred fifteen".