6855553 has 4 divisors (see below), whose sum is σ = 6891268. Its totient is φ = 6819840.

The previous prime is 6855529. The next prime is 6855593. The reversal of 6855553 is 3555586.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3873024 + 2982529 = 1968^2 + 1727^2 .

It is a cyclic number.

It is not a de Polignac number, because 6855553 - 2⁹ = 6855041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6855593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17568 + ... + 17953.

It is an arithmetic number, because the mean of its divisors is an integer number (1722817).

Almost surely, 2^6855553 is an apocalyptic number.

It is an amenable number.

6855553 is a deficient number, since it is larger than the sum of its proper divisors (35715).

6855553 is a wasteful number, since it uses less digits than its factorization.

6855553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35714.

The product of its digits is 90000, while the sum is 37.

The square root of 6855553 is about 2618.3110968714. The cubic root of 6855553 is about 189.9681664119.

The spelling of 6855553 in words is "six million, eight hundred fifty-five thousand, five hundred fifty-three".