86245121 has 2 divisors, whose sum is σ = 86245122. Its totient is φ = 86245120.

The previous prime is 86245109. The next prime is 86245129. The reversal of 86245121 is 12154268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44823025 + 41422096 = 6695^2 + 6436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86245121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86245129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43122560 + 43122561.

It is an arithmetic number, because the mean of its divisors is an integer number (43122561).

Almost surely, 2^86245121 is an apocalyptic number.

It is an amenable number.

86245121 is a deficient number, since it is larger than the sum of its proper divisors (1).

86245121 is an equidigital number, since it uses as much as digits as its factorization.

86245121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 29.

The square root of 86245121 is about 9286.8251302585. The cubic root of 86245121 is about 441.8194648411.

Adding to 86245121 its reverse (12154268), we get a palindrome (98399389).

The spelling of 86245121 in words is "eighty-six million, two hundred forty-five thousand, one hundred twenty-one".