86163251 has 2 divisors, whose sum is σ = 86163252. Its totient is φ = 86163250.

The previous prime is 86163247. The next prime is 86163281. The reversal of 86163251 is 15236168.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86163251 - 2² = 86163247 is a prime.

It is not a weakly prime, because it can be changed into another prime (86163281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43081625 + 43081626.

It is an arithmetic number, because the mean of its divisors is an integer number (43081626).

Almost surely, 2^86163251 is an apocalyptic number.

86163251 is a deficient number, since it is larger than the sum of its proper divisors (1).

86163251 is an equidigital number, since it uses as much as digits as its factorization.

86163251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 86163251 is about 9282.4162263928. The cubic root of 86163251 is about 441.6796184327.

The spelling of 86163251 in words is "eighty-six million, one hundred sixty-three thousand, two hundred fifty-one".