135622401 has 8 divisors (see below), whose sum is σ = 184677504. Its totient is φ = 88491120.

The previous prime is 135622397. The next prime is 135622429. The reversal of 135622401 is 104226531.

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

It is not a de Polignac number, because 135622401 - 2² = 135622397 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135622441) 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 7 ways as a sum of consecutive naturals, for example, 480790 + ... + 481071.

It is an arithmetic number, because the mean of its divisors is an integer number (23084688).

Almost surely, 2^135622401 is an apocalyptic number.

It is an amenable number.

135622401 is a deficient number, since it is larger than the sum of its proper divisors (49055103).

135622401 is an equidigital number, since it uses as much as digits as its factorization.

135622401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961911.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 135622401 is about 11645.7031131658. The cubic root of 135622401 is about 513.7799390560.

Adding to 135622401 its reverse (104226531), we get a palindrome (239848932).

The spelling of 135622401 in words is "one hundred thirty-five million, six hundred twenty-two thousand, four hundred one".