81086301 has 12 divisors (see below), whose sum is σ = 117204412. Its totient is φ = 54020736.

The previous prime is 81086251. The next prime is 81086309. The reversal of 81086301 is 10368018.

It can be written as a sum of positive squares in 2 ways, for example, as 42968025 + 38118276 = 6555^2 + 6174^2 .

It is not a de Polignac number, because 81086301 - 2¹¹ = 81084253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81086309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20085 + ... + 23781.

Almost surely, 2^81086301 is an apocalyptic number.

It is an amenable number.

81086301 is a deficient number, since it is larger than the sum of its proper divisors (36118111).

81086301 is a wasteful number, since it uses less digits than its factorization.

81086301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6140 (or 6137 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 81086301 is about 9004.7932236115. The cubic root of 81086301 is about 432.8284802303.

The spelling of 81086301 in words is "eighty-one million, eighty-six thousand, three hundred one".