36001081 has 4 divisors (see below), whose sum is σ = 36200164. Its totient is φ = 35802000.

The previous prime is 36001079. The next prime is 36001099. The reversal of 36001081 is 18010063.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2128681 + 33872400 = 1459^2 + 5820^2 .

It is a cyclic number.

It is not a de Polignac number, because 36001081 - 2¹ = 36001079 is a prime.

It is a super-2 number, since 2×36001081² = 2592155666337122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36001051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99270 + ... + 99631.

It is an arithmetic number, because the mean of its divisors is an integer number (9050041).

Almost surely, 2^36001081 is an apocalyptic number.

It is an amenable number.

36001081 is a deficient number, since it is larger than the sum of its proper divisors (199083).

36001081 is a wasteful number, since it uses less digits than its factorization.

36001081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199082.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 36001081 is about 6000.0900826571. The cubic root of 36001081 is about 330.1960298410.

The spelling of 36001081 in words is "thirty-six million, one thousand, eighty-one".