138582497 has 2 divisors, whose sum is σ = 138582498. Its totient is φ = 138582496.

The previous prime is 138582481. The next prime is 138582539. The reversal of 138582497 is 794285831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116294656 + 22287841 = 10784^2 + 4721^2 .

It is an emirp because it is prime and its reverse (794285831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138582497 - 2⁴ = 138582481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138582407) 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, 69291248 + 69291249.

It is an arithmetic number, because the mean of its divisors is an integer number (69291249).

Almost surely, 2^138582497 is an apocalyptic number.

It is an amenable number.

138582497 is a deficient number, since it is larger than the sum of its proper divisors (1).

138582497 is an equidigital number, since it uses as much as digits as its factorization.

138582497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The square root of 138582497 is about 11772.1067358396. The cubic root of 138582497 is about 517.4909916205.

The spelling of 138582497 in words is "one hundred thirty-eight million, five hundred eighty-two thousand, four hundred ninety-seven".