86221045 has 4 divisors (see below), whose sum is σ = 103465260. Its totient is φ = 68976832.

The previous prime is 86221039. The next prime is 86221067. The reversal of 86221045 is 54012268.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57244356 + 28976689 = 7566^2 + 5383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86221045 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 8622100 + ... + 8622109.

It is an arithmetic number, because the mean of its divisors is an integer number (25866315).

Almost surely, 2^86221045 is an apocalyptic number.

It is an amenable number.

86221045 is a deficient number, since it is larger than the sum of its proper divisors (17244215).

86221045 is a wasteful number, since it uses less digits than its factorization.

86221045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17244214.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 86221045 is about 9285.5287948506. The cubic root of 86221045 is about 441.7783485619.

The spelling of 86221045 in words is "eighty-six million, two hundred twenty-one thousand, forty-five".