2651239 has 2 divisors, whose sum is σ = 2651240. Its totient is φ = 2651238.

The previous prime is 2651237. The next prime is 2651273. The reversal of 2651239 is 9321562.

2651239 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 2651239 - 2¹ = 2651237 is a prime.

Together with 2651237, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2651237) 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, 1325619 + 1325620.

It is an arithmetic number, because the mean of its divisors is an integer number (1325620).

2^2651239 is an apocalyptic number.

2651239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2651239 is an equidigital number, since it uses as much as digits as its factorization.

2651239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 2651239 is about 1628.2625709633. The cubic root of 2651239 is about 138.4043138252.

The spelling of 2651239 in words is "two million, six hundred fifty-one thousand, two hundred thirty-nine".