2509841 has 2 divisors, whose sum is σ = 2509842. Its totient is φ = 2509840.

The previous prime is 2509831. The next prime is 2509849. The reversal of 2509841 is 1489052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1345600 + 1164241 = 1160^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 2509841 - 2⁶ = 2509777 is a prime.

It is not a weakly prime, because it can be changed into another prime (2509849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254920 + 1254921.

It is an arithmetic number, because the mean of its divisors is an integer number (1254921).

2^2509841 is an apocalyptic number.

It is an amenable number.

2509841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2509841 is an equidigital number, since it uses as much as digits as its factorization.

2509841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 2509841 is about 1584.2477710257. The cubic root of 2509841 is about 135.8987315614.

The spelling of 2509841 in words is "two million, five hundred nine thousand, eight hundred forty-one".