550646000 has 40 divisors (see below), whose sum is σ = 1331466864. Its totient is φ = 220257600.

The previous prime is 550645961. The next prime is 550646021. The reversal of 550646000 is 646055.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×550646000² = 606422034632000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135662 + ... + 139661.

Almost surely, 2^550646000 is an apocalyptic number.

550646000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

550646000 is an abundant number, since it is smaller than the sum of its proper divisors (780820864).

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

550646000 is a wasteful number, since it uses less digits than its factorization.

550646000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275346 (or 275330 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 550646000 is about 23465.8475235820. The cubic root of 550646000 is about 819.6419217850.

Subtracting from 550646000 its reverse (646055), we obtain a palindrome (549999945).

The spelling of 550646000 in words is "five hundred fifty million, six hundred forty-six thousand".