86537081 has 2 divisors, whose sum is σ = 86537082. Its totient is φ = 86537080.

The previous prime is 86537071. The next prime is 86537141. The reversal of 86537081 is 18073568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72097081 + 14440000 = 8491^2 + 3800^2 .

It is a cyclic number.

It is not a de Polignac number, because 86537081 - 2¹⁰ = 86536057 is a prime.

It is a super-2 number, since 2×86537081² = 14977332776001122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86537051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43268540 + 43268541.

It is an arithmetic number, because the mean of its divisors is an integer number (43268541).

Almost surely, 2^86537081 is an apocalyptic number.

It is an amenable number.

86537081 is a deficient number, since it is larger than the sum of its proper divisors (1).

86537081 is an equidigital number, since it uses as much as digits as its factorization.

86537081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 86537081 is about 9302.5308921820. The cubic root of 86537081 is about 442.3174575573.

The spelling of 86537081 in words is "eighty-six million, five hundred thirty-seven thousand, eighty-one".