138574517 has 8 divisors (see below), whose sum is σ = 144962880. Its totient is φ = 132216480.

The previous prime is 138574507. The next prime is 138574519. The reversal of 138574517 is 715475831.

It is a happy number.

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 138574517 - 2¹⁰ = 138573493 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 (138574519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2042 + ... + 16772.

It is an arithmetic number, because the mean of its divisors is an integer number (18120360).

Almost surely, 2^138574517 is an apocalyptic number.

It is an amenable number.

138574517 is a deficient number, since it is larger than the sum of its proper divisors (6388363).

138574517 is a wasteful number, since it uses less digits than its factorization.

138574517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15163.

The product of its digits is 117600, while the sum is 41.

The square root of 138574517 is about 11771.7677941760. The cubic root of 138574517 is about 517.4810585302.

The spelling of 138574517 in words is "one hundred thirty-eight million, five hundred seventy-four thousand, five hundred seventeen".