8551281 has 16 divisors (see below), whose sum is σ = 11770880. Its totient is φ = 5518800.

The previous prime is 8551271. The next prime is 8551297. The reversal of 8551281 is 1821558.

8551281 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8551281 - 2⁹ = 8550769 is a prime.

It is a super-2 number, since 2×8551281² = 146248813481922, which contains 22 as substring.

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 (8551211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19260 + ... + 19698.

It is an arithmetic number, because the mean of its divisors is an integer number (735680).

Almost surely, 2^8551281 is an apocalyptic number.

It is an amenable number.

8551281 is a deficient number, since it is larger than the sum of its proper divisors (3219599).

8551281 is a wasteful number, since it uses less digits than its factorization.

8551281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its digits is 3200, while the sum is 30.

The square root of 8551281 is about 2924.2573416168. The cubic root of 8551281 is about 204.4923469218.

The spelling of 8551281 in words is "eight million, five hundred fifty-one thousand, two hundred eighty-one".