86145291 has 6 divisors (see below), whose sum is σ = 124432100. Its totient is φ = 57430188.

The previous prime is 86145233. The next prime is 86145343. The reversal of 86145291 is 19254168.

It is not a de Polignac number, because 86145291 - 2¹¹ = 86143243 is a prime.

It is a super-2 number, since 2×86145291² = 14842022322949362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86145391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4785841 + ... + 4785858.

Almost surely, 2^86145291 is an apocalyptic number.

86145291 is a deficient number, since it is larger than the sum of its proper divisors (38286809).

86145291 is a wasteful number, since it uses less digits than its factorization.

86145291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9571705 (or 9571702 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 86145291 is about 9281.4487554476. The cubic root of 86145291 is about 441.6489281749.

It can be divided in two parts, 86145 and 291, that added together give a square (86436 = 294²).

The spelling of 86145291 in words is "eighty-six million, one hundred forty-five thousand, two hundred ninety-one".