135401451 has 4 divisors (see below), whose sum is σ = 180535272. Its totient is φ = 90267632.

The previous prime is 135401423. The next prime is 135401471. The reversal of 135401451 is 154104531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135401451 - 2⁷ = 135401323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135401471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22566906 + ... + 22566911.

It is an arithmetic number, because the mean of its divisors is an integer number (45133818).

Almost surely, 2^135401451 is an apocalyptic number.

135401451 is a deficient number, since it is larger than the sum of its proper divisors (45133821).

135401451 is an equidigital number, since it uses as much as digits as its factorization.

135401451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45133820.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 135401451 is about 11636.2129148619. The cubic root of 135401451 is about 513.5007782398.

Adding to 135401451 its reverse (154104531), we get a palindrome (289505982).

The spelling of 135401451 in words is "one hundred thirty-five million, four hundred one thousand, four hundred fifty-one".