86164551 has 24 divisors (see below), whose sum is σ = 143763984. Its totient is φ = 49148160.

The previous prime is 86164537. The next prime is 86164567. The reversal of 86164551 is 15546168.

86164551 is a `hidden beast` number, since 8 + 6 + 1 + 645 + 5 + 1 = 666.

It is not a de Polignac number, because 86164551 - 2¹⁰ = 86163527 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86164501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23916 + ... + 27281.

It is an arithmetic number, because the mean of its divisors is an integer number (5990166).

Almost surely, 2^86164551 is an apocalyptic number.

86164551 is a deficient number, since it is larger than the sum of its proper divisors (57599433).

86164551 is a wasteful number, since it uses less digits than its factorization.

86164551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51231 (or 51228 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 86164551 is about 9282.4862509998. The cubic root of 86164551 is about 441.6818397224.

The spelling of 86164551 in words is "eighty-six million, one hundred sixty-four thousand, five hundred fifty-one".