138416055 has 16 divisors (see below), whose sum is σ = 221785440. Its totient is φ = 73715328.

The previous prime is 138416053. The next prime is 138416071. The reversal of 138416055 is 550614831.

It is not a de Polignac number, because 138416055 - 2¹ = 138416053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138416051) 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, 4701 + ... + 17289.

It is an arithmetic number, because the mean of its divisors is an integer number (13861590).

Almost surely, 2^138416055 is an apocalyptic number.

138416055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138416055 is a deficient number, since it is larger than the sum of its proper divisors (83369385).

138416055 is a wasteful number, since it uses less digits than its factorization.

138416055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13330.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 138416055 is about 11765.0352740653. The cubic root of 138416055 is about 517.2837342274.

The spelling of 138416055 in words is "one hundred thirty-eight million, four hundred sixteen thousand, fifty-five".