138582575 has 24 divisors (see below), whose sum is σ = 177519888. Its totient is φ = 107239680.

The previous prime is 138582559. The next prime is 138582581. The reversal of 138582575 is 575285831.

It is not a de Polignac number, because 138582575 - 2⁴ = 138582559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215204 + ... + 215846.

It is an arithmetic number, because the mean of its divisors is an integer number (7396662).

Almost surely, 2^138582575 is an apocalyptic number.

138582575 is a deficient number, since it is larger than the sum of its proper divisors (38937313).

138582575 is a wasteful number, since it uses less digits than its factorization.

138582575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 918 counting only the distinct ones).

The product of its digits is 336000, while the sum is 44.

The square root of 138582575 is about 11772.1100487551. The cubic root of 138582575 is about 517.4910887090.

The spelling of 138582575 in words is "one hundred thirty-eight million, five hundred eighty-two thousand, five hundred seventy-five".