138063251 has 8 divisors (see below), whose sum is σ = 141620400. Its totient is φ = 134541472.

The previous prime is 138063223. The next prime is 138063259. The reversal of 138063251 is 152360831.

138063251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 138063251 - 2⁶ = 138063187 is a prime.

It is a super-2 number, since 2×138063251² = 38122922553378002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138063259) 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, 845 + ... + 16638.

It is an arithmetic number, because the mean of its divisors is an integer number (17702550).

Almost surely, 2^138063251 is an apocalyptic number.

138063251 is a deficient number, since it is larger than the sum of its proper divisors (3557149).

138063251 is a wasteful number, since it uses less digits than its factorization.

138063251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17685.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 138063251 is about 11750.0319574033. The cubic root of 138063251 is about 516.8438646224.

The spelling of 138063251 in words is "one hundred thirty-eight million, sixty-three thousand, two hundred fifty-one".