138277255 has 16 divisors (see below), whose sum is σ = 168981120. Its totient is φ = 108605952.

The previous prime is 138277199. The next prime is 138277259. The reversal of 138277255 is 552772831.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 138277255 - 2¹³ = 138269063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138277259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76927 + ... + 78703.

It is an arithmetic number, because the mean of its divisors is an integer number (10561320).

Almost surely, 2^138277255 is an apocalyptic number.

138277255 is a deficient number, since it is larger than the sum of its proper divisors (30703865).

138277255 is a wasteful number, since it uses less digits than its factorization.

138277255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058.

The product of its digits is 117600, while the sum is 40.

The square root of 138277255 is about 11759.1349596813. The cubic root of 138277255 is about 517.1107701998.

The spelling of 138277255 in words is "one hundred thirty-eight million, two hundred seventy-seven thousand, two hundred fifty-five".