8281291 has 2 divisors, whose sum is σ = 8281292. Its totient is φ = 8281290.

The previous prime is 8281249. The next prime is 8281313. The reversal of 8281291 is 1921828.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8281291 is a prime.

It is an Ulam number.

It is equal to p₅₅₇₄₂₈ and since 8281291 and 557428 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (8281201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140645 + 4140646.

It is an arithmetic number, because the mean of its divisors is an integer number (4140646).

Almost surely, 2^8281291 is an apocalyptic number.

8281291 is a deficient number, since it is larger than the sum of its proper divisors (1).

8281291 is an equidigital number, since it uses as much as digits as its factorization.

8281291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 31.

The square root of 8281291 is about 2877.7232320013. The cubic root of 8281291 is about 202.3171422500.

The spelling of 8281291 in words is "eight million, two hundred eighty-one thousand, two hundred ninety-one".