3251491 has 4 divisors (see below), whose sum is σ = 3258232. Its totient is φ = 3244752.

The previous prime is 3251473. The next prime is 3251503. The reversal of 3251491 is 1941523.

3251491 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 is a cyclic number.

It is not a de Polignac number, because 3251491 - 2⁷ = 3251363 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3251411) 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, 2586 + ... + 3631.

It is an arithmetic number, because the mean of its divisors is an integer number (814558).

Almost surely, 2^3251491 is an apocalyptic number.

3251491 is a deficient number, since it is larger than the sum of its proper divisors (6741).

3251491 is an equidigital number, since it uses as much as digits as its factorization.

3251491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6740.

The product of its digits is 1080, while the sum is 25.

The square root of 3251491 is about 1803.1891193106. The cubic root of 3251491 is about 148.1474516580.

The spelling of 3251491 in words is "three million, two hundred fifty-one thousand, four hundred ninety-one".