3565081 has 4 divisors (see below), whose sum is σ = 3839332. Its totient is φ = 3290832.

The previous prime is 3565049. The next prime is 3565097. The reversal of 3565081 is 1805653.

3565081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 705600 + 2859481 = 840^2 + 1691^2 .

It is a cyclic number.

It is not a de Polignac number, because 3565081 - 2⁵ = 3565049 is a prime.

It is a super-2 number, since 2×3565081² = 25419605073122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (3565021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137106 + ... + 137131.

It is an arithmetic number, because the mean of its divisors is an integer number (959833).

Almost surely, 2^3565081 is an apocalyptic number.

It is an amenable number.

3565081 is a deficient number, since it is larger than the sum of its proper divisors (274251).

3565081 is a wasteful number, since it uses less digits than its factorization.

3565081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274250.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 3565081 is about 1888.1422086273. The cubic root of 3565081 is about 152.7647430373.

The spelling of 3565081 in words is "three million, five hundred sixty-five thousand, eighty-one".