86352821 has 2 divisors, whose sum is σ = 86352822. Its totient is φ = 86352820.

The previous prime is 86352817. The next prime is 86352839. The reversal of 86352821 is 12825368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85562500 + 790321 = 9250^2 + 889^2 .

It is a cyclic number.

It is not a de Polignac number, because 86352821 - 2² = 86352817 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86355821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43176410 + 43176411.

It is an arithmetic number, because the mean of its divisors is an integer number (43176411).

Almost surely, 2^86352821 is an apocalyptic number.

It is an amenable number.

86352821 is a deficient number, since it is larger than the sum of its proper divisors (1).

86352821 is an equidigital number, since it uses as much as digits as its factorization.

86352821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The square root of 86352821 is about 9292.6218582271. The cubic root of 86352821 is about 442.0032980924.

The spelling of 86352821 in words is "eighty-six million, three hundred fifty-two thousand, eight hundred twenty-one".