138775101 has 4 divisors (see below), whose sum is σ = 185033472. Its totient is φ = 92516732.

The previous prime is 138775099. The next prime is 138775129. The reversal of 138775101 is 101577831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101577831 = 3 ⋅33859277.

It is a cyclic number.

It is not a de Polignac number, because 138775101 - 2¹ = 138775099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138775151) 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, 23129181 + ... + 23129186.

It is an arithmetic number, because the mean of its divisors is an integer number (46258368).

Almost surely, 2^138775101 is an apocalyptic number.

It is an amenable number.

138775101 is a deficient number, since it is larger than the sum of its proper divisors (46258371).

138775101 is an equidigital number, since it uses as much as digits as its factorization.

138775101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46258370.

The product of its (nonzero) digits is 5880, while the sum is 33.

The square root of 138775101 is about 11780.2844193169. The cubic root of 138775101 is about 517.7306195150.

The spelling of 138775101 in words is "one hundred thirty-eight million, seven hundred seventy-five thousand, one hundred one".