2491759 has 2 divisors, whose sum is σ = 2491760. Its totient is φ = 2491758.

The previous prime is 2491757. The next prime is 2491777. The reversal of 2491759 is 9571942.

2491759 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 2491759 - 2¹ = 2491757 is a prime.

Together with 2491757, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2⁵ + 4⁴ + 9⁴ + 1 + 7³ + 5⁹ + 9⁶ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2491757) 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, 1245879 + 1245880.

It is an arithmetic number, because the mean of its divisors is an integer number (1245880).

2^2491759 is an apocalyptic number.

2491759 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491759 is an equidigital number, since it uses as much as digits as its factorization.

2491759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 2491759 is about 1578.5306458856. The cubic root of 2491759 is about 135.5715865610.

It can be divided in two parts, 24917 and 59, that added together give a triangular number (24976 = T₂₂₃).

The spelling of 2491759 in words is "two million, four hundred ninety-one thousand, seven hundred fifty-nine".