138087559 has 2 divisors, whose sum is σ = 138087560. Its totient is φ = 138087558.

The previous prime is 138087533. The next prime is 138087601. The reversal of 138087559 is 955780831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138087559 - 2⁷ = 138087431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138087529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69043779 + 69043780.

It is an arithmetic number, because the mean of its divisors is an integer number (69043780).

Almost surely, 2^138087559 is an apocalyptic number.

138087559 is a deficient number, since it is larger than the sum of its proper divisors (1).

138087559 is an equidigital number, since it uses as much as digits as its factorization.

138087559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 46.

The square root of 138087559 is about 11751.0662920435. The cubic root of 138087559 is about 516.8741954147.

The spelling of 138087559 in words is "one hundred thirty-eight million, eighty-seven thousand, five hundred fifty-nine".