6550857 has 18 divisors (see below), whose sum is σ = 9721166. Its totient is φ = 4250880.

The previous prime is 6550847. The next prime is 6550879. The reversal of 6550857 is 7580556.

It can be written as a sum of positive squares in 3 ways, for example, as 962361 + 5588496 = 981^2 + 2364^2 .

It is not a de Polignac number, because 6550857 - 2⁶ = 6550793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6550847) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 14913 + ... + 15345.

Almost surely, 2^6550857 is an apocalyptic number.

It is an amenable number.

6550857 is a deficient number, since it is larger than the sum of its proper divisors (3170309).

6550857 is a wasteful number, since it uses less digits than its factorization.

6550857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 6550857 is about 2559.4642017422. The cubic root of 6550857 is about 187.1110229412. Note that the first 3 decimals are identical.

The spelling of 6550857 in words is "six million, five hundred fifty thousand, eight hundred fifty-seven".