2491351 has 2 divisors, whose sum is σ = 2491352. Its totient is φ = 2491350.

The previous prime is 2491343. The next prime is 2491369. The reversal of 2491351 is 1531942.

2491351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2491351 - 2³ = 2491343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2491331) 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 as a sum of consecutive naturals, namely, 1245675 + 1245676.

It is an arithmetic number, because the mean of its divisors is an integer number (1245676).

2^2491351 is an apocalyptic number.

2491351 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491351 is an equidigital number, since it uses as much as digits as its factorization.

2491351 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2491351 is about 1578.4014064870. The cubic root of 2491351 is about 135.5641866711.

It can be divided in two parts, 24913 and 51, that added together give a square (24964 = 158²).

The spelling of 2491351 in words is "two million, four hundred ninety-one thousand, three hundred fifty-one".