135817401 has 4 divisors (see below), whose sum is σ = 181089872. Its totient is φ = 90544932.

The previous prime is 135817399. The next prime is 135817433. The reversal of 135817401 is 104718531.

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: 104718531 = 3 ⋅34906177.

It is not a de Polignac number, because 135817401 - 2¹ = 135817399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135817441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22636231 + ... + 22636236.

It is an arithmetic number, because the mean of its divisors is an integer number (45272468).

Almost surely, 2^135817401 is an apocalyptic number.

It is an amenable number.

135817401 is a deficient number, since it is larger than the sum of its proper divisors (45272471).

135817401 is an equidigital number, since it uses as much as digits as its factorization.

135817401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45272470.

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

The square root of 135817401 is about 11654.0722925508. The cubic root of 135817401 is about 514.0260613997.

The spelling of 135817401 in words is "one hundred thirty-five million, eight hundred seventeen thousand, four hundred one".