3591081 has 24 divisors (see below), whose sum is σ = 5768160. Its totient is φ = 2207088.

The previous prime is 3591079. The next prime is 3591083. The reversal of 3591081 is 1801953.

It is an interprime number because it is at equal distance from previous prime (3591079) and next prime (3591083).

It is not a de Polignac number, because 3591081 - 2¹ = 3591079 is a prime.

It is a super-2 number, since 2×3591081² = 25791725497122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (3591083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4170 + ... + 4956.

It is an arithmetic number, because the mean of its divisors is an integer number (240340).

Almost surely, 2^3591081 is an apocalyptic number.

It is an amenable number.

3591081 is a deficient number, since it is larger than the sum of its proper divisors (2177079).

3591081 is a wasteful number, since it uses less digits than its factorization.

3591081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 3591081 is about 1895.0147756680. The cubic root of 3591081 is about 153.1352130353.

The spelling of 3591081 in words is "three million, five hundred ninety-one thousand, eighty-one".