10259987 has 2 divisors, whose sum is σ = 10259988. Its totient is φ = 10259986.

The previous prime is 10259983. The next prime is 10259999. The reversal of 10259987 is 78995201.

10259987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (78995201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10259987 - 2² = 10259983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10259983) 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, 5129993 + 5129994.

It is an arithmetic number, because the mean of its divisors is an integer number (5129994).

Almost surely, 2^10259987 is an apocalyptic number.

10259987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10259987 is an equidigital number, since it uses as much as digits as its factorization.

10259987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 10259987 is about 3203.1214463395. The cubic root of 10259987 is about 217.2946015283.

The spelling of 10259987 in words is "ten million, two hundred fifty-nine thousand, nine hundred eighty-seven".