138525047 has 8 divisors (see below), whose sum is σ = 141017760. Its totient is φ = 136047520.

The previous prime is 138525041. The next prime is 138525073. The reversal of 138525047 is 740525831.

It is a happy number.

138525047 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 a cyclic number.

It is not a de Polignac number, because 138525047 - 2²² = 134330743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138524998 and 138525016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138525041) 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, 15473 + ... + 22725.

It is an arithmetic number, because the mean of its divisors is an integer number (17627220).

Almost surely, 2^138525047 is an apocalyptic number.

138525047 is a deficient number, since it is larger than the sum of its proper divisors (2492713).

138525047 is an equidigital number, since it uses as much as digits as its factorization.

138525047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7593.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 138525047 is about 11769.6663928932. Note that the first 3 decimals coincide. The cubic root of 138525047 is about 517.4194723275.

The spelling of 138525047 in words is "one hundred thirty-eight million, five hundred twenty-five thousand, forty-seven".