138522567 has 8 divisors (see below), whose sum is σ = 187453696. Its totient is φ = 90969912.

The previous prime is 138522533. The next prime is 138522569. The reversal of 138522567 is 765225831.

138522567 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138522567 - 2²⁰ = 137473991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138522569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344383 + ... + 344784.

It is an arithmetic number, because the mean of its divisors is an integer number (23431712).

Almost surely, 2^138522567 is an apocalyptic number.

138522567 is a deficient number, since it is larger than the sum of its proper divisors (48931129).

138522567 is an equidigital number, since it uses as much as digits as its factorization.

138522567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689237.

The product of its digits is 100800, while the sum is 39.

The square root of 138522567 is about 11769.5610368442. The cubic root of 138522567 is about 517.4163845395.

The spelling of 138522567 in words is "one hundred thirty-eight million, five hundred twenty-two thousand, five hundred sixty-seven".