86255581 has 8 divisors (see below), whose sum is σ = 87870240. Its totient is φ = 84646128.

The previous prime is 86255563. The next prime is 86255591. The reversal of 86255581 is 18555268.

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 86255581 - 2⁷ = 86255453 is a prime.

It is a super-2 number, since 2×86255581² = 14880050507295122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86255531) 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, 50910 + ... + 52576.

It is an arithmetic number, because the mean of its divisors is an integer number (10983780).

Almost surely, 2^86255581 is an apocalyptic number.

It is an amenable number.

86255581 is a deficient number, since it is larger than the sum of its proper divisors (1614659).

86255581 is a wasteful number, since it uses less digits than its factorization.

86255581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603.

The product of its digits is 96000, while the sum is 40.

The square root of 86255581 is about 9287.3882765824. The cubic root of 86255581 is about 441.8373257347.

The spelling of 86255581 in words is "eighty-six million, two hundred fifty-five thousand, five hundred eighty-one".