86232257 has 2 divisors, whose sum is σ = 86232258. Its totient is φ = 86232256.

The previous prime is 86232247. The next prime is 86232259. The reversal of 86232257 is 75223268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86192656 + 39601 = 9284^2 + 199^2 .

It is a cyclic number.

It is not a de Polignac number, because 86232257 - 2⁶ = 86232193 is a prime.

Together with 86232259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86232259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43116128 + 43116129.

It is an arithmetic number, because the mean of its divisors is an integer number (43116129).

Almost surely, 2^86232257 is an apocalyptic number.

It is an amenable number.

86232257 is a deficient number, since it is larger than the sum of its proper divisors (1).

86232257 is an equidigital number, since it uses as much as digits as its factorization.

86232257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 35.

The square root of 86232257 is about 9286.1325103619. The cubic root of 86232257 is about 441.7974970353.

The spelling of 86232257 in words is "eighty-six million, two hundred thirty-two thousand, two hundred fifty-seven".