138501201 has 4 divisors (see below), whose sum is σ = 184668272. Its totient is φ = 92334132.

The previous prime is 138501197. The next prime is 138501229. The reversal of 138501201 is 102105831.

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, and also an emirpimes, since its reverse is a distinct semiprime: 102105831 = 3 ⋅34035277.

It is not a de Polignac number, because 138501201 - 2² = 138501197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138501301) 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, 23083531 + ... + 23083536.

It is an arithmetic number, because the mean of its divisors is an integer number (46167068).

Almost surely, 2^138501201 is an apocalyptic number.

It is an amenable number.

138501201 is a deficient number, since it is larger than the sum of its proper divisors (46167071).

138501201 is an equidigital number, since it uses as much as digits as its factorization.

138501201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46167070.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 138501201 is about 11768.6533214298. The cubic root of 138501201 is about 517.3897807228.

It can be divided in two parts, 13850 and 1201, that added together give a palindrome (15051).

The spelling of 138501201 in words is "one hundred thirty-eight million, five hundred one thousand, two hundred one".