138062755 has 4 divisors (see below), whose sum is σ = 165675312. Its totient is φ = 110450200.

The previous prime is 138062753. The next prime is 138062761. The reversal of 138062755 is 557260831.

138062755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557260831 = 179 ⋅3113189.

It is not a de Polignac number, because 138062755 - 2¹ = 138062753 is a prime.

It is a super-2 number, since 2×138062755² = 38122648636380050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138062753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13806271 + ... + 13806280.

It is an arithmetic number, because the mean of its divisors is an integer number (41418828).

Almost surely, 2^138062755 is an apocalyptic number.

138062755 is a deficient number, since it is larger than the sum of its proper divisors (27612557).

138062755 is an equidigital number, since it uses as much as digits as its factorization.

138062755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27612556.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 138062755 is about 11750.0108510588. The cubic root of 138062755 is about 516.8432456914.

It can be divided in two parts, 13806 and 2755, that added together give a palindrome (16561).

The spelling of 138062755 in words is "one hundred thirty-eight million, sixty-two thousand, seven hundred fifty-five".