86202581 has 2 divisors, whose sum is σ = 86202582. Its totient is φ = 86202580.

The previous prime is 86202553. The next prime is 86202607. The reversal of 86202581 is 18520268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61858225 + 24344356 = 7865^2 + 4934^2 .

It is a cyclic number.

It is not a de Polignac number, because 86202581 - 2²⁶ = 19093717 is a prime.

It is a super-2 number, since 2×86202581² = 14861769942123122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86202521) 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 as a sum of consecutive naturals, namely, 43101290 + 43101291.

It is an arithmetic number, because the mean of its divisors is an integer number (43101291).

Almost surely, 2^86202581 is an apocalyptic number.

It is an amenable number.

86202581 is a deficient number, since it is larger than the sum of its proper divisors (1).

86202581 is an equidigital number, since it uses as much as digits as its factorization.

86202581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 86202581 is about 9284.5345063713. The cubic root of 86202581 is about 441.7468111039.

The spelling of 86202581 in words is "eighty-six million, two hundred two thousand, five hundred eighty-one".