86852581 has 2 divisors, whose sum is σ = 86852582. Its totient is φ = 86852580.

The previous prime is 86852573. The next prime is 86852603. The reversal of 86852581 is 18525868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85932900 + 919681 = 9270^2 + 959^2 .

It is a cyclic number.

It is not a de Polignac number, because 86852581 - 2³ = 86852573 is a prime.

It is a super-2 number, since 2×86852581² = 15086741652723122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86852501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43426290 + 43426291.

It is an arithmetic number, because the mean of its divisors is an integer number (43426291).

Almost surely, 2^86852581 is an apocalyptic number.

It is an amenable number.

86852581 is a deficient number, since it is larger than the sum of its proper divisors (1).

86852581 is an equidigital number, since it uses as much as digits as its factorization.

86852581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153600, while the sum is 43.

The square root of 86852581 is about 9319.4732147262. The cubic root of 86852581 is about 442.8543445787.

The spelling of 86852581 in words is "eighty-six million, eight hundred fifty-two thousand, five hundred eighty-one".