86177281 has 2 divisors, whose sum is σ = 86177282. Its totient is φ = 86177280.

The previous prime is 86177269. The next prime is 86177321. The reversal of 86177281 is 18277168.

It is an a-pointer prime, because the next prime (86177321) can be obtained adding 86177281 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79495056 + 6682225 = 8916^2 + 2585^2 .

It is a cyclic number.

It is not a de Polignac number, because 86177281 - 2⁵ = 86177249 is a prime.

It is a super-2 number, since 2×86177281² = 14853047521105922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86177261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43088640 + 43088641.

It is an arithmetic number, because the mean of its divisors is an integer number (43088641).

Almost surely, 2^86177281 is an apocalyptic number.

It is an amenable number.

86177281 is a deficient number, since it is larger than the sum of its proper divisors (1).

86177281 is an equidigital number, since it uses as much as digits as its factorization.

86177281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 40.

The square root of 86177281 is about 9283.1719255866. The cubic root of 86177281 is about 441.7035900938.

The spelling of 86177281 in words is "eighty-six million, one hundred seventy-seven thousand, two hundred eighty-one".