2499247 has 2 divisors, whose sum is σ = 2499248. Its totient is φ = 2499246.

The previous prime is 2499197. The next prime is 2499253. The reversal of 2499247 is 7429942.

2499247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2499247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2499257) 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, 1249623 + 1249624.

It is an arithmetic number, because the mean of its divisors is an integer number (1249624).

2^2499247 is an apocalyptic number.

2499247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2499247 is an equidigital number, since it uses as much as digits as its factorization.

2499247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 2499247 is about 1580.9006926433. The cubic root of 2499247 is about 135.7072530850.

The spelling of 2499247 in words is "two million, four hundred ninety-nine thousand, two hundred forty-seven".