86530321 has 2 divisors, whose sum is σ = 86530322. Its totient is φ = 86530320.

The previous prime is 86530303. The next prime is 86530333. The reversal of 86530321 is 12303568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82609921 + 3920400 = 9089^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 86530321 - 2⁷ = 86530193 is a prime.

It is equal to p_5027545 and since 86530321 and 5027545 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86530321.

It is not a weakly prime, because it can be changed into another prime (86590321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43265160 + 43265161.

It is an arithmetic number, because the mean of its divisors is an integer number (43265161).

Almost surely, 2^86530321 is an apocalyptic number.

It is an amenable number.

86530321 is a deficient number, since it is larger than the sum of its proper divisors (1).

86530321 is an equidigital number, since it uses as much as digits as its factorization.

86530321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 86530321 is about 9302.1675431052. The cubic root of 86530321 is about 442.3059397823.

Adding to 86530321 its reverse (12303568), we get a palindrome (98833889).

The spelling of 86530321 in words is "eighty-six million, five hundred thirty thousand, three hundred twenty-one".