3162581 has 4 divisors (see below), whose sum is σ = 3169152. Its totient is φ = 3156012.

The previous prime is 3162557. The next prime is 3162587. The reversal of 3162581 is 1852613.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1852613 = 7 ⋅264659.

It is a cyclic number.

It is not a de Polignac number, because 3162581 - 2⁶ = 3162517 is a prime.

It is a super-2 number, since 2×3162581² = 20003837163122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3162581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3162587) 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, 2501 + ... + 3546.

It is an arithmetic number, because the mean of its divisors is an integer number (792288).

Almost surely, 2^3162581 is an apocalyptic number.

It is an amenable number.

3162581 is a deficient number, since it is larger than the sum of its proper divisors (6571).

3162581 is an equidigital number, since it uses as much as digits as its factorization.

3162581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6570.

The product of its digits is 1440, while the sum is 26.

The square root of 3162581 is about 1778.3646982551. The cubic root of 3162581 is about 146.7846198747.

The spelling of 3162581 in words is "three million, one hundred sixty-two thousand, five hundred eighty-one".