138417501 has 4 divisors (see below), whose sum is σ = 184556672. Its totient is φ = 92278332.

The previous prime is 138417457. The next prime is 138417569. The reversal of 138417501 is 105714831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 138417501 - 2⁶ = 138417437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138417101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23069581 + ... + 23069586.

It is an arithmetic number, because the mean of its divisors is an integer number (46139168).

Almost surely, 2^138417501 is an apocalyptic number.

It is an amenable number.

138417501 is a deficient number, since it is larger than the sum of its proper divisors (46139171).

138417501 is an equidigital number, since it uses as much as digits as its factorization.

138417501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46139170.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 138417501 is about 11765.0967271842. The cubic root of 138417501 is about 517.2855355350.

The spelling of 138417501 in words is "one hundred thirty-eight million, four hundred seventeen thousand, five hundred one".