138214551 has 8 divisors (see below), whose sum is σ = 190640880. Its totient is φ = 88965632.

The previous prime is 138214541. The next prime is 138214577. The reversal of 138214551 is 155412831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138214551 - 2⁶ = 138214487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138214541) 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, 794250 + ... + 794423.

It is an arithmetic number, because the mean of its divisors is an integer number (23830110).

Almost surely, 2^138214551 is an apocalyptic number.

138214551 is a deficient number, since it is larger than the sum of its proper divisors (52426329).

138214551 is a wasteful number, since it uses less digits than its factorization.

138214551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588705.

The product of its digits is 4800, while the sum is 30.

The square root of 138214551 is about 11756.4684748440. The cubic root of 138214551 is about 517.0325943731.

The spelling of 138214551 in words is "one hundred thirty-eight million, two hundred fourteen thousand, five hundred fifty-one".