86018557 has 4 divisors (see below), whose sum is σ = 86295456. Its totient is φ = 85741660.

The previous prime is 86018539. The next prime is 86018563. The reversal of 86018557 is 75581068.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86018557 - 2²³ = 77629949 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86018057) 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 in 3 ways as a sum of consecutive naturals, for example, 137983 + ... + 138604.

It is an arithmetic number, because the mean of its divisors is an integer number (21573864).

Almost surely, 2^86018557 is an apocalyptic number.

It is an amenable number.

86018557 is a deficient number, since it is larger than the sum of its proper divisors (276899).

86018557 is a wasteful number, since it uses less digits than its factorization.

86018557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276898.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 86018557 is about 9274.6189679145. The cubic root of 86018557 is about 441.4322422904.

The spelling of 86018557 in words is "eighty-six million, eighteen thousand, five hundred fifty-seven".