8551 has 4 divisors (see below), whose sum is σ = 9072. Its totient is φ = 8032.

The previous prime is 8543. The next prime is 8563. The reversal of 8551 is 1558.

8551 = T₇₄ + T₇₅ + T₇₆.

8551 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8551 - 2³ = 8543 is a prime.

It is a Duffinian number.

8551 is a lucky number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235 + ... + 268.

It is an arithmetic number, because the mean of its divisors is an integer number (2268).

2⁸⁵⁵¹ is an apocalyptic number.

8551 is the 76-th centered triangular number.

8551 is a deficient number, since it is larger than the sum of its proper divisors (521).

8551 is a wasteful number, since it uses less digits than its factorization.

8551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its digits is 200, while the sum is 19.

The square root of 8551 is about 92.4716172671. The cubic root of 8551 is about 20.4490106985.

It can be divided in two parts, 85 and 51, that added together give a triangular number (136 = T₁₆).

The spelling of 8551 in words is "eight thousand, five hundred fifty-one".