86331517 has 2 divisors, whose sum is σ = 86331518. Its totient is φ = 86331516.

The previous prime is 86331493. The next prime is 86331529. The reversal of 86331517 is 71513368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86322681 + 8836 = 9291^2 + 94^2 .

It is a cyclic number.

It is not a de Polignac number, because 86331517 - 2¹⁹ = 85807229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86331547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43165758 + 43165759.

It is an arithmetic number, because the mean of its divisors is an integer number (43165759).

Almost surely, 2^86331517 is an apocalyptic number.

It is an amenable number.

86331517 is a deficient number, since it is larger than the sum of its proper divisors (1).

86331517 is an equidigital number, since it uses as much as digits as its factorization.

86331517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 86331517 is about 9291.4755017704. The cubic root of 86331517 is about 441.9669464032.

The spelling of 86331517 in words is "eighty-six million, three hundred thirty-one thousand, five hundred seventeen".