8218251 has 6 divisors (see below), whose sum is σ = 11870820. Its totient is φ = 5478828.

The previous prime is 8218229. The next prime is 8218253. The reversal of 8218251 is 1528128.

8218251 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8218251 - 2⁶ = 8218187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8218253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 456561 + ... + 456578.

It is an arithmetic number, because the mean of its divisors is an integer number (1978470).

Almost surely, 2^8218251 is an apocalyptic number.

8218251 is a deficient number, since it is larger than the sum of its proper divisors (3652569).

8218251 is a wasteful number, since it uses less digits than its factorization.

8218251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913145 (or 913142 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 8218251 is about 2866.7492042381. The cubic root of 8218251 is about 201.8024651306.

The spelling of 8218251 in words is "eight million, two hundred eighteen thousand, two hundred fifty-one".