2469581 has 2 divisors, whose sum is σ = 2469582. Its totient is φ = 2469580.

The previous prime is 2469559. The next prime is 2469583. The reversal of 2469581 is 1859642.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2402500 + 67081 = 1550^2 + 259^2 .

It is a cyclic number.

It is not a de Polignac number, because 2469581 - 2¹⁸ = 2207437 is a prime.

It is a super-2 number, since 2×2469581² = 12197660631122, which contains 22 as substring.

Together with 2469583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2469583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1234790 + 1234791.

It is an arithmetic number, because the mean of its divisors is an integer number (1234791).

2^2469581 is an apocalyptic number.

It is an amenable number.

2469581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2469581 is an equidigital number, since it uses as much as digits as its factorization.

2469581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 2469581 is about 1571.4900572387. The cubic root of 2469581 is about 135.1681672018.

The spelling of 2469581 in words is "two million, four hundred sixty-nine thousand, five hundred eighty-one".