550025555 has 8 divisors (see below), whose sum is σ = 660170544. Its totient is φ = 439927200.

The previous prime is 550025543. The next prime is 550025561. The reversal of 550025555 is 555520055.

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

It is not a de Polignac number, because 550025555 - 2⁸ = 550025299 is a prime.

It is a super-2 number, since 2×550025555² = 605056222306116050, which contains 22 as substring.

It is a Duffinian number.

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, 24485 + ... + 41225.

It is an arithmetic number, because the mean of its divisors is an integer number (82521318).

Almost surely, 2^550025555 is an apocalyptic number.

550025555 is a deficient number, since it is larger than the sum of its proper divisors (110144989).

550025555 is a wasteful number, since it uses less digits than its factorization.

550025555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23317.

The product of its (nonzero) digits is 31250, while the sum is 32.

The square root of 550025555 is about 23452.6236272192. The cubic root of 550025555 is about 819.3339599526. Note that the first 3 decimals are identical.

The spelling of 550025555 in words is "five hundred fifty million, twenty-five thousand, five hundred fifty-five".