3539581 has 4 divisors (see below), whose sum is σ = 3546432. Its totient is φ = 3532732.

The previous prime is 3539579. The next prime is 3539593. The reversal of 3539581 is 1859353.

3539581 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3539581 - 2¹ = 3539579 is a prime.

It is a super-2 number, since 2×3539581² = 25057267311122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3539521) 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, 2581 + ... + 3706.

It is an arithmetic number, because the mean of its divisors is an integer number (886608).

Almost surely, 2^3539581 is an apocalyptic number.

It is an amenable number.

3539581 is a deficient number, since it is larger than the sum of its proper divisors (6851).

3539581 is an equidigital number, since it uses as much as digits as its factorization.

3539581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6850.

The product of its digits is 16200, while the sum is 34.

The square root of 3539581 is about 1881.3774209339. The cubic root of 3539581 is about 152.3996437281.

The spelling of 3539581 in words is "three million, five hundred thirty-nine thousand, five hundred eighty-one".