138051 has 8 divisors (see below), whose sum is σ = 204560.
Its totient is φ = 92016.
The previous prime is 138041. The next prime is 138053. The reversal of 138051 is 150831.
138051 = T13 + T14 + ... +
It is a happy number.
It is a de Polignac number, because none of the positive numbers 2k-138051 is a prime.
It is a Duffinian number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 138051.
It is not an unprimeable number, because it can be changed into a prime (138053) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2530 + ... + 2583.
It is an arithmetic number, because the mean of its divisors is an integer number (25570).
2138051 is an apocalyptic number.
138051 is a deficient number, since it is larger than the sum of its proper divisors (66509).
138051 is an equidigital number, since it uses as much as digits as its factorization.
138051 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5122 (or 5116 counting only the distinct ones).
The product of its (nonzero) digits is 120, while the sum is 18.
The square root of 138051 is about 371.5521497717.
The cubic root of 138051 is about 51.6828576843.
Adding to 138051 its reverse (150831), we get a palindrome (288882).
It can be divided in two parts, 1380 and 51, that added together give a triangular number (1431 = T53).
The spelling of 138051 in words is "one hundred thirty-eight thousand, fifty-one".