6550557 has 16 divisors (see below), whose sum is σ = 9504768. Its totient is φ = 3988800.

The previous prime is 6550553. The next prime is 6550631. The reversal of 6550557 is 7550556.

It is not a de Polignac number, because 6550557 - 2² = 6550553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6550553) 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 15 ways as a sum of consecutive naturals, for example, 3108 + ... + 4770.

It is an arithmetic number, because the mean of its divisors is an integer number (594048).

Almost surely, 2^6550557 is an apocalyptic number.

It is an amenable number.

6550557 is a deficient number, since it is larger than the sum of its proper divisors (2954211).

6550557 is a wasteful number, since it uses less digits than its factorization.

6550557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780.

The product of its (nonzero) digits is 26250, while the sum is 33.

The square root of 6550557 is about 2559.4055950552. The cubic root of 6550557 is about 187.1081666145.

Subtracting 6550557 from its reverse (7550556), we obtain a palindrome (999999).

The spelling of 6550557 in words is "six million, five hundred fifty thousand, five hundred fifty-seven".