6551885 has 8 divisors (see below), whose sum is σ = 8324856. Its totient is φ = 4933120.

The previous prime is 6551879. The next prime is 6551887. The reversal of 6551885 is 5881556.

It can be written as a sum of positive squares in 4 ways, for example, as 1471369 + 5080516 = 1213^2 + 2254^2 .

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

It is not a de Polignac number, because 6551885 - 2⁶ = 6551821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38456 + ... + 38625.

It is an arithmetic number, because the mean of its divisors is an integer number (1040607).

Almost surely, 2^6551885 is an apocalyptic number.

It is an amenable number.

6551885 is a deficient number, since it is larger than the sum of its proper divisors (1772971).

6551885 is a wasteful number, since it uses less digits than its factorization.

6551885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77103.

The product of its digits is 48000, while the sum is 38.

The square root of 6551885 is about 2559.6650171458. The cubic root of 6551885 is about 187.1208099594.

The spelling of 6551885 in words is "six million, five hundred fifty-one thousand, eight hundred eighty-five".