86033221 has 2 divisors, whose sum is σ = 86033222. Its totient is φ = 86033220.

The previous prime is 86033219. The next prime is 86033231. The reversal of 86033221 is 12233068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77704225 + 8328996 = 8815^2 + 2886^2 .

It is a cyclic number.

It is not a de Polignac number, because 86033221 - 2¹ = 86033219 is a prime.

Together with 86033219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86033231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43016610 + 43016611.

It is an arithmetic number, because the mean of its divisors is an integer number (43016611).

Almost surely, 2^86033221 is an apocalyptic number.

It is an amenable number.

86033221 is a deficient number, since it is larger than the sum of its proper divisors (1).

86033221 is an equidigital number, since it uses as much as digits as its factorization.

86033221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 86033221 is about 9275.4094788316. The cubic root of 86033221 is about 441.4573252292.

Adding to 86033221 its reverse (12233068), we get a palindrome (98266289).

The spelling of 86033221 in words is "eighty-six million, thirty-three thousand, two hundred twenty-one".