6551559 has 12 divisors (see below), whose sum is σ = 10815376. Its totient is φ = 3743712.

The previous prime is 6551533. The next prime is 6551563. The reversal of 6551559 is 9551556.

It is not a de Polignac number, because 6551559 - 2⁹ = 6551047 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51934 + ... + 52059.

Almost surely, 2^6551559 is an apocalyptic number.

6551559 is a deficient number, since it is larger than the sum of its proper divisors (4263817).

6551559 is a wasteful number, since it uses less digits than its factorization.

6551559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104006 (or 104003 counting only the distinct ones).

The product of its digits is 33750, while the sum is 36.

The square root of 6551559 is about 2559.6013361459. The cubic root of 6551559 is about 187.1177064050.

Subtracting from 6551559 its product of digits (33750), we obtain a square (6517809 = 2553²).

The spelling of 6551559 in words is "six million, five hundred fifty-one thousand, five hundred fifty-nine".