86251517 has 8 divisors (see below), whose sum is σ = 97128192. Its totient is φ = 75880800.

The previous prime is 86251493. The next prime is 86251519. The reversal of 86251517 is 71515268.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86251517 - 2⁸ = 86251261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86251519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126128 + ... + 126809.

It is an arithmetic number, because the mean of its divisors is an integer number (12141024).

Almost surely, 2^86251517 is an apocalyptic number.

It is an amenable number.

86251517 is a deficient number, since it is larger than the sum of its proper divisors (10876675).

86251517 is a wasteful number, since it uses less digits than its factorization.

86251517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252979.

The product of its digits is 16800, while the sum is 35.

The square root of 86251517 is about 9287.1694826788. The cubic root of 86251517 is about 441.8303864539.

It can be divided in two parts, 86251 and 517, that added together give a palindrome (86768).

The spelling of 86251517 in words is "eighty-six million, two hundred fifty-one thousand, five hundred seventeen".