86115121 has 2 divisors, whose sum is σ = 86115122. Its totient is φ = 86115120.

The previous prime is 86115101. The next prime is 86115131. The reversal of 86115121 is 12151168.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52056225 + 34058896 = 7215^2 + 5836^2 .

It is a cyclic number.

It is not a de Polignac number, because 86115121 - 2²³ = 77726513 is a prime.

It is not a weakly prime, because it can be changed into another prime (86115101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43057560 + 43057561.

It is an arithmetic number, because the mean of its divisors is an integer number (43057561).

Almost surely, 2^86115121 is an apocalyptic number.

It is an amenable number.

86115121 is a deficient number, since it is larger than the sum of its proper divisors (1).

86115121 is an equidigital number, since it uses as much as digits as its factorization.

86115121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 25.

The square root of 86115121 is about 9279.8233280596. The cubic root of 86115121 is about 441.5973637236.

Adding to 86115121 its reverse (12151168), we get a palindrome (98266289).

The spelling of 86115121 in words is "eighty-six million, one hundred fifteen thousand, one hundred twenty-one".