138555214 has 16 divisors (see below), whose sum is σ = 245714400. Its totient is φ = 57333024.

The previous prime is 138555211. The next prime is 138555227. The reversal of 138555214 is 412555831.

It is a self number, because there is not a number n which added to its sum of digits gives 138555214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138555211) 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, 170229 + ... + 171040.

It is an arithmetic number, because the mean of its divisors is an integer number (15357150).

Almost surely, 2^138555214 is an apocalyptic number.

138555214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138555214 is a deficient number, since it is larger than the sum of its proper divisors (107159186).

138555214 is a wasteful number, since it uses less digits than its factorization.

138555214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341307.

The product of its digits is 24000, while the sum is 34.

The square root of 138555214 is about 11770.9478802686. The cubic root of 138555214 is about 517.4570295795.

The spelling of 138555214 in words is "one hundred thirty-eight million, five hundred fifty-five thousand, two hundred fourteen".