10826509 has 2 divisors, whose sum is σ = 10826510. Its totient is φ = 10826508.

The previous prime is 10826507. The next prime is 10826521. The reversal of 10826509 is 90562801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10745284 + 81225 = 3278^2 + 285^2 .

It is a cyclic number.

It is not a de Polignac number, because 10826509 - 2¹ = 10826507 is a prime.

Together with 10826507, 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 (10826503) 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, 5413254 + 5413255.

It is an arithmetic number, because the mean of its divisors is an integer number (5413255).

Almost surely, 2^10826509 is an apocalyptic number.

It is an amenable number.

10826509 is a deficient number, since it is larger than the sum of its proper divisors (1).

10826509 is an equidigital number, since it uses as much as digits as its factorization.

10826509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 10826509 is about 3290.3660890545. The cubic root of 10826509 is about 221.2225939859. Note that the first 3 decimals are identical.

The spelling of 10826509 in words is "ten million, eight hundred twenty-six thousand, five hundred nine".