138582550 has 36 divisors (see below), whose sum is σ = 264073500. Its totient is φ = 54107760.

The previous prime is 138582539. The next prime is 138582551. The reversal of 138582550 is 55285831.

138582550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138582551) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 91701 + ... + 93199.

It is an arithmetic number, because the mean of its divisors is an integer number (7335375).

Almost surely, 2^138582550 is an apocalyptic number.

138582550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138582550 is a deficient number, since it is larger than the sum of its proper divisors (125490950).

138582550 is a wasteful number, since it uses less digits than its factorization.

138582550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 138582550 is about 11772.1089869233. The cubic root of 138582550 is about 517.4910575909.

The spelling of 138582550 in words is "one hundred thirty-eight million, five hundred eighty-two thousand, five hundred fifty".